the nervous system

psychoactive drugs

Many drugs affect the brain and influence how a person feels, thinks, or acts. Such drugs are called psychoactive drugs. They include legal drugs such as caffeine and alcohol, as well as illegal drugs such as cocaine and heroin. They also include certain medicines, such as antidepressant drugs and medical marijuana. Some psychoactive drugs, such as caffeine, stimulate the central nervous system. They may make the user feel more alert. Some psychoactive drugs, such as alcohol, depress the central nervous system. They may make the user feel more relaxed. Still other psychoactive drugs, such as marijuana, are hallucinogenic drugs. They may make the user have altered sensations, perceptions, or thoughts.

motor division

The motor division of the peripheral nervous system carries messages from the central nervous system to muscles, internal organs, and glands throughout the body. The brain sends commands to these tissues, telling them how to respond. As you can see in Figure 20.7, the motor division is divided into additional parts. The autonomic part of the motor division controls involuntary responses. It sends messages to organs and glands. These messages control the body both during emergencies (sympathetic division) and during none- mergencies (parasympathetic division). The somatic part of the motor division controls voluntary responses. It sends messages to the skeletal muscles for movements that are under conscious control.

sensory division

The sensory division of the peripheral nervous system carries messages from sense organs and internal organs to the central nervous system. For example, it carries messages about images from the eyes to the brain. Once the messages reach the brain, the brain interprets the information.

textbook_image

the amazing human brain

The human brain is an amazing organ. It is the most complex organ in the human body. By adulthood, the brain weighs about 3 pounds and consists of billions of neurons. All those cells need a lot of energy. In fact, the adult brain uses almost a quarter of the total energy used by the body! The brain serves as the control center of the nervous system and the body as a whole. It lets us understand what we see, hear, or sense in other ways. It allows us to learn, think, remember, and use language. It controls all the organs and muscles in our body.

textbook_image

central nervous system

The nervous system has two main parts, called the central nervous system and the peripheral nervous system. The peripheral nervous system is described later in this lesson. The central nervous system is shown in Figure 20.4. It includes the brain and spinal cord.

the synapse

The nerve endings of an axon dont actually touch the dendrites of other neurons. The messages must cross a tiny gap between the two neurons, called the synapse. Chemicals called neurotransmitters carry the message across this gap. When a nerve impulse arrives at the end of an axon, neurotransmitters are released. They travel across the synaptic gap to a dendrite of another neuron. The neurotransmitters bind to the membrane of the dendrite, triggering a nerve impulse in the next neuron. You can see how this works in Figure 20.3 and in this animation: The transmission of nerve impulses between neurons is like the passing of a baton between runners in a relay race. After the first runner races, she passes the baton to the second runner. Then the second runner takes over. Instead of a baton, a neuron passes neurotransmitters to the next neuron.

textbook_image

types of neurons

There are three basic types of neurons: sensory neurons, motor neurons, and interneurons. All three types must work together to receive and respond to information. 1. Sensory neurons transmit nerve impulses from sense organs and internal organs to the brain via the spinal cord. In other words, they carry information about the inside and outside environment to the brain. 2. Motor neurons transmit nerve impulses from the brain via the spinal cord to internal organs, glands, and muscles. In other words, they carry information from the brain to the body, telling the body how to respond. 3. Interneurons carry nerve impulses back and forth between sensory and motor neurons.

peripheral nervous system

All the other nervous tissues in the body are part of the peripheral nervous system. If you look again at Figure 20.1, you can see the major nerves of the peripheral nervous system. They include nerves that run through virtually every part of the body, both inside and out, except for the brain and spinal cord. The peripheral nervous system has two main divisions: the sensory division and the motor division. The divisions carry messages in opposite directions. Figure 20.7 shows these divisions of the peripheral nervous system.

the spinal cord

The spinal cord is a long, tube-shaped bundle of neurons. It runs from the brain stem to the lower back. The main job of the spinal cord is to carry nerve impulses back and forth between the body and brain. The spinal cord is like a two-way road. Messages about the body, both inside and out, pass through the spinal cord to the brain. Messages from the brain pass in the other direction through the spinal cord to tell the body what to do.

hemispheres and lobes of the cerebrum

The cerebrum is divided down the middle from the front to the back of the head. The two halves of the cerebrum are called the right and left hemispheres. The two hemispheres are very similar but not identical. They are connected to each other by a thick bundle of axons deep within the brain. These axons allow the two hemispheres to communicate with each other. Did you know that the right hemisphere of the cerebrum controls the left side of the body, and vice versa? This can happen because of the connections between the two hemispheres. Each hemisphere is further divided into four parts, called lobes, as you can see in Figure 20.6. Each lobe has different functions. One function of each lobe is listed in the figure.

textbook_image

parts of the brain

The brain consists of three major parts, called the cerebrum, cerebellum, and brain stem. You can see these three parts of the brain in Figure 20.5. You can use this interactive animation to explore these parts of the brain: http://s 1. The cerebrum is the largest part of the brain. It controls conscious functions, such as thinking, sensing, speaking, and voluntary muscle movements. Whether you are chatting with a friend or playing a video game, you are using your cerebrum. 2. The cerebellum is the next largest part of the brain. It controls body position, coordination, and balance. Hakeems cerebellum kicked in when he started to lose his balance on the railing in the opening photo. It allowed him to regain his balance. 3. The brain stem (also called the medulla) is the smallest part of the brain. It controls involuntary body functions such as breathing, heartbeat, and digestion. It also carries nerve impulses back and forth between the rest of the brain and the spinal cord.

textbook_image

drug abuse and drug addiction

Psychoactive drugs may bring about changes in mood that users find desirable. These drugs may be abused. Drug abuse is use of a drug without the advice of a medical professional and for reasons not originally intended. Continued use of a psychoactive drug may lead to drug addiction. This occurs when a drug user is unable to stop using the drug. Over time, a drug user may need more of the drug to get the desired effect. This can lead to drug overdose and death.

functions of the nervous system

Controlling muscles and maintaining balance are just two of the functions of the human nervous system. What else does the nervous system do? It senses the surrounding environment with sense organs that include the eyes and ears. It senses the bodys own internal environment, including its temperature. It controls internal body systems to make sure the body maintains homeostasis. It prepares the body to fight or flee in the case of an emergency. It allows thinking, learning, memory, and language. Remember Hakeem the skater from the first page of the chapter? When Hakeem started to fall off the railing, his nervous system sensed that he was losing his balance. It responded by sending messages to his muscles. Some muscles contracted while other relaxed. As a result, Hakeem gained his balance again. How did his nervous system accomplish all of this in just a split second? You need to know how the nervous system transmits messages to answer that question.

alzheimers disease

Alzheimers disease is another disease that occurs mainly in older adults. In Alzheimers disease, a person gradually loses most normal mental functions. The patient typically suffers from increasing memory loss, confusion, and mood swings. The cause of Alzheimers isnt known for certain, but it appears to be associated with certain abnormal changes in the brain. There is no known cure for this devastating disease, but medicines may be able to slow its progression.

injuries to the brain and spinal cord

The brain and spinal cord are protected within bones of the skeletal system, but injuries to these organs still occur. With mild injuries, there may be no lasting effects. With severe injuries, there may be permanent disability or even death. Brain and spinal cord injuries most commonly occur because of car crashes or athletic activities. Fortunately, many injuries can be prevented by wearing seat belts and safety helmets (see Figure 20.9). Avoiding unnecessary risks, such as doing stunts on a bike or diving into shallow water, can also reduce the chances of brain and spinal cord injuries. The most common type of brain injury is a concussion. This is a bruise on the surface of the brain. It may cause temporary symptoms such as headache and confusion. Most concussions heal on their own in a few days or weeks. However, repeated concussions can lead to permanent changes in the brain. More serious brain injuries also often cause permanent brain damage. Spinal cord injuries may cause paralysis. Some people recover from spinal cord injuries. However, many people remain paralyzed for life. This happens when the spinal cord can no longer transmit nerve impulses between the body and brain.

textbook_image

neurons and nerve impulses

The nervous system is made up of nerves. A nerve is a bundle of nerve cells. A nerve cell that carries messages is called a neuron. The messages carried by neurons are called nerve impulses. A nerve impulse can travel very quickly because it is an electrical signal. Think about flipping on a light switch when you enter a room. When you flip the switch, electricity flows to the light through wires inside the walls. The electricity may have to travel many meters to reach the light. Nonetheless, the light still comes on as soon as you flip the switch. Nerve impulses travel just as quickly through the network of nerves inside the body.

structure of a neuron

The structure of a neuron suits it for its function of transmitting nerve impulses. You can see what a neuron looks like in Figure 20.2. It has a special shape that lets it pass electrical signals to and from other cells. A neuron has three main parts: cell body, dendrites, and axon. 1. The cell body contains the nucleus and other organelles. 2. Dendrites receive nerve impulses from other cells. A single neuron may have thousands of dendrites. 3. The axon passes on the nerve impulses to other cells. It branches at the end into multiple nerve endings so it can transmit impulses to many other cells.

textbook_image

nervous system diseases and injuries

Nervous system problems include diseases and injuries. Most nervous system diseases cant be prevented. But you can take steps to decrease your risk of nervous system injuries.

infections of the nervous system

Bacteria and viruses can infect the brain or spinal cord. An infection of the brain is called encephalitis. An infection of the membranes that cover the brain and spinal cord is called meningitis. A vaccine is available to prevent meningitis caused by viruses (see Figure 20.8). Encephalitis and meningitis arent very common, but they can be extremely serious. They may cause swelling of the brain, which can be fatal. Thats why its important to know the symptoms of these diseases. Both encephalitis and meningitis typically cause a severe headache and a fever. Meningitis also causes a stiff neck. Both require emergency medical treatment.

textbook_image

epilepsy

Epilepsy is a disease in which seizures occur. A seizure is a period of lost consciousness that may include violent muscle contractions. It is caused by abnormal electrical activity in the brain. Epilepsy may result from an infection, injury, or tumor. In many cases, however, the cause cant be identified. There is no known cure for epilepsy, but the seizures often can be prevented with medicine. Sometimes children with epilepsy outgrow it by adulthood.

stroke

A stroke occurs when a blood clot blocks blood flow to part of the brain. Brain cells die quickly when their oxygen supply is cut off. Therefore, a stroke may cause permanent loss of normal mental functions. Many stroke patients suffer some degree of paralysis, or loss of the ability to feel or move certain parts of the body. If medical treatment is given very soon after a stroke occurs, some of the damage may be reversed. Strokes occur mainly in older adults.

drugs and the nervous system

A drug is any chemical substance that affects the body or brain. Some drugs are medicines. Although these drugs are helpful when used properly, they can be misused like any other drug. Drugs that arent medicines include both legal and illegal drugs. Both can do harm.

instructional diagrams

description_image

This diagram depicts the parts of a neuron. A neuron is a basic building block of the nervous system that is responsible for receiving and transmitting information. Dendrites are treelike extensions at the beginning of a neuron that help increase the surface area of the cell body. The cell body is where the signals from the dendrites are joined and passed on. The nucleus is present within the cell body. It produces RNA that supports important cell functions. The axon is the elongated fiber that connects the cell body to the axon endings and transmits the neural signal. The axon is often covered with a fatty substance called the myelin sheath that acts as an insulator.

description_image

The diagram below shows the human nervous system. The nervous system conducts stimuli from sensory receptors to the brain and spinal cord and that conducts impulses back to other parts of the body. As with other higher vertebrates, the human nervous system has two main parts: the central nervous system (the brain and spinal cord) and the peripheral nervous system (the nerves that carry impulses to and from the central nervous system). The nervous system consists of the brain, spinal cord, sensory organs, and all the nerves that connect these organs with the rest of the body. Together, these organs are responsible for the control of the body and communication among its parts. The brain and spinal cord from the control center known as the central nervous system.

description_image

This diagram shows the structure of a cell. It has the cell body, dived into the dendrite, nucleus, and also the axon. Other parts of the cell are the myelin sheath, node of Ranvier and lastly the synaptic know

description_image

This is a diagram of the anatomy of a brain. The brain is made up of several parts, as you can see in the picture. The brain has four lobes. The frontal lobe is used for the basic purpose of reasoning. The parietal lobe is used for the sense, touch. The temporal lobe is used for hearing. The occipital lobe is used for sight. The cerebellum is the next largest part of the brain. It controls body position, coordination, and balance.

description_image

The diagram shows the anatomy of a multipolar neutron. A multipolar neuron (or multipolar neurone) is a type of neuron that possesses a single (usually long) axon and many dendrites, allowing for the integration of a great deal of information from other neurons. These dendritic branches can also emerge from the nerve cell body. Multipolar neurons constitute the majority of neurons in the brain and include motor neurons and interneurons. It is found majority in the cerebral cortex. The nerve endings of an axon don't actually touch the dendrites of other neurons. The messages must cross a tiny gap between the two neurons, called the synapse. There are two types of synaptic cells: presynaptic and postsynaptic. The presynaptic cell is the neuron sending the signal. The postsynaptic cell is the structure receiving the signal.

description_image

The diagram shows the various parts of the human brain. The three main parts of the brain are the cerebrum, cerebellum and medula. The cerebrum is divided down the middle from the front to the back of the head. The two halves of the cerebrum are called the right and left hemispheres. Each hemisphere is further subdivided into lobes which are shown in this diagram. The lobes shown are frontal lobe, parietal lobe, temporal lobe and occipital lobe. The cerebrum is the largest part of the brain, the next largest part is the cerebellum. The spinal cord is a long, tube-shaped bundle of neurons. Cererbum controls conscious functions, such as thinking, sensing, speaking, and voluntary muscle movements. Cerebellum controls body position, coordination, and balance. The main function of the spinal cord is to carry nerve impulses back and forth between the body and brain.

questions

A bundle of nerve cells make up a(n)

a. neuron.

-->  b. nerve.

c. axon.

d. lobe.

Functions of the human nervous system include

a. sensing the internal and external environments.

b. helping maintain homeostasis of the body.

c. preparing the body to fight or flee in emergencies.

-->  d. all of the above

How do nerve impulses travel across a synapse?

a. They swim across through synaptic fluid.

-->  b. They are carried across by special chemicals.

c. They jump across like an electric spark.

d. They move across through interneurons.

The type of neuron that carries messages from the brain to internal organs and glands is a(n)

-->  a. motor neuron.

b. sensory neuron.

c. organ neuron.

d. endocrine neuron.

The brain stem

a. is the smallest of the three main part of the brain.

b. carries nerve impulses between the brain and spinal cord.

c. controls involuntary body functions such as digestion.

-->  d. all of the above

Which statement about the brain is false?

a. It is the most complex organ in the body.

-->  b. It is the largest organ in the body.

c. It consists of billions of neurons.

d. It serves as the control center of the body.

Which part of the brain controls involuntary functions such as heartbeat?

a. cerebrum

b. cerebellum

-->  c. brain stem

d. temporal lobe

The part of the cerebrum that controls hearing is the

a. frontal lobe.

b. parietal lobe.

-->  c. temporal lobe.

d. occipital lobe.

Which part of the peripheral nervous system controls only involuntary responses of the body?

a. sensory division

b. motor division

c. somatic nervous system

-->  d. autonomic nervous system

Which part of the peripheral nervous system controls muscles that are under voluntary control?

a. sympathetic division

b. parasympathetic division

-->  c. somatic nervous system

d. autonomic nervous system

Central nervous system infections include

a. encephalitis.

b. epilepsy.

c. meningitis.

-->  d. two of the above

Use of a drug without the advice of medical professionals and for reasons not originally intended is referred to as

a. drug addiction.

b. drug overdose.

-->  c. drug abuse.

d. none of the above

A stroke occurs when a blood clot blocks blood flow to part of the brain.

-->  a. true

b. false

Psychoactive drugs include antidepressants and caffeine.

-->  a. true

b. false

The cerebellum is divided down the middle to form right and left hemispheres.

a. true

-->  b. false

The spinal cord is part of the peripheral nervous system.

a. true

-->  b. false

The sensory division of the peripheral nervous system carries messages away from the brain.

a. true

-->  b. false

A single neuron may have thousands of dendrites.

-->  a. true

b. false

The cerebellum controls conscious functions such as thinking and speaking.

a. true

-->  b. false

The two hemispheres of the cerebrum are identical to each other.

a. true

-->  b. false

The peripheral nervous system includes all of the nervous tissue in the body except for the brain.

a. true

-->  b. false

The sympathetic division of the autonomic nervous system prepares the body for emergencies.

-->  a. true

b. false

Seizures in epilepsy are caused by abnormal electrical activity in the brain.

-->  a. true

b. false

All psychoactive drugs are illegal drugs.

a. true

-->  b. false

__type of nerve cell that carries nerve impulses back and forth between sensory and motor neurons

a. axon

b. cerebellum

c. cell body

d. dendrite

e. nerve impulse

f. cerebrum

-->  g. interneuron

__largest part of the brain

a. axon

b. cerebellum

c. cell body

d. dendrite

e. nerve impulse

-->  f. cerebrum

g. interneuron

__part of a neuron that contains the nucleus and other organelles

a. axon

b. cerebellum

-->  c. cell body

d. dendrite

e. nerve impulse

f. cerebrum

g. interneuron

__part of the brain that controls coordination and balance

a. axon

-->  b. cerebellum

c. cell body

d. dendrite

e. nerve impulse

f. cerebrum

g. interneuron

__part of a neuron that receives nerve impulses from other cells

a. axon

b. cerebellum

c. cell body

-->  d. dendrite

e. nerve impulse

f. cerebrum

g. interneuron

__part of a neuron that passes on nerve impulses to other cells

-->  a. axon

b. cerebellum

c. cell body

d. dendrite

e. nerve impulse

f. cerebrum

g. interneuron

__electrical message carried by neurons

a. axon

b. cerebellum

c. cell body

d. dendrite

-->  e. nerve impulse

f. cerebrum

g. interneuron

diagram questions

question_image

Identify the frontal lobe in this picture

-->  a. K

b. T

c. Y

d. A

question_image

Which letter represents the Frontal Lobe?

a. E

b. A

-->  c. K

d. T

question_image

Which part is the cerebellum?

-->  a. Y

b. T

c. K

d. M

question_image

Which represents the frontal lobe?

a. T

-->  b. K

c. Y

d. E

question_image

Which label refers to the spinal cord?

a. F

b. L

c. A

-->  d. Y

question_image

Which letter is representative for the Frontal Lobe in this diagram?

a. A

b. L

-->  c. F

d. U

question_image

What part of the brain regulates motor movements?

a. Y

b. A

-->  c. U

d. L

question_image

Which label marks the pons?

a. C

-->  b. J

c. M

d. W

question_image

Which letter represents Wernicke's area?

a. D

b. V

-->  c. T

d. H

question_image

Which letter represents the motor cortex?

a. R

b. N

-->  c. H

d. V

question_image

I control body position, coordination, and balance. What am I?

a. FRONTAL LOBE

b. PARIETAL LOBE

c. TEMPORAL LOBE

-->  d. CEREBELLUM

question_image

What connects C to J?

a. F

b. R

-->  c. M

d. H

question_image

By what letter is the peripheral nerves represented in the diagram?

a. A

b. H

-->  c. W

d. K

question_image

Which label represents the brain?

-->  a. K

b. W

c. A

d. H

question_image

Which letter represents the brain?

a. W

b. A

c. H

-->  d. K

question_image

Identify the cerebrum in this picture

a. V

-->  b. W

c. C

d. X

question_image

What letter label refers to the cerebellum?

-->  a. V

b. D

c. X

d. W

question_image

Identify the ventricles in this picture

a. M

b. W

-->  c. C

d. X

question_image

Select the Pons.

a. V

b. E

-->  c. F

d. M

question_image

Which represents the cerebrum?

-->  a. W

b. X

c. C

d. D

question_image

By what letter is the spinal cord represented in the diagram?

a. T

b. K

c. D

-->  d. M

question_image

Which represents the spinal cord?

a. K

-->  b. M

c. T

d. D

question_image

By what letter is the hippocampus represented in the diagram?

a. D

b. T

-->  c. L

d. F

question_image

Which letter represents the VTA?

a. F

b. L

c. T

-->  d. A

question_image

Which label shows the cerebellum?

a. S

b. A

c. F

-->  d. J

question_image

Which letter represents the corpus callosum?

a. K

-->  b. Y

c. L

d. A

question_image

Identify the part of the brain responsible for reasoning.

-->  a. E

b. L

c. A

d. F

question_image

Which of the following is responsible for controlling automatic body processes?

a. A

b. E

-->  c. S

d. L

question_image

Which label indicates the temporal lobe?

-->  a. D

b. C

c. R

d. N

question_image

Which label shows the occipital lobe?

a. N

b. F

c. W

-->  d. C

question_image

Where is the frontal lobe?

a. N

b. F

-->  c. R

d. W

question_image

Which letter is representing the brain stem?

a. W

b. F

-->  c. K

d. R

question_image

Identify the cerebellum

a. P

b. J

-->  c. D

d. V

question_image

Which label shows the Muscular Nerve?

a. M

b. U

-->  c. X

d. L

question_image

Identify the part whose function is to receive information from the sensory systems, the spinal cord, and other parts of the brain and then regulates motor movements.

a. V

-->  b. D

c. Y

d. J

question_image

I feel numbness and weakness in the first three fingers, and half of the fourth finger of my hand. Which nerve may be affected?

a. L

-->  b. K

c. Y

d. V

question_image

Which label refers to the spinal cord?

-->  a. C

b. V

c. D

d. R

question_image

Which part of the brain is represented with the letter R?

a. CEREBRUM

b. TEMPORAL LOBE

c. PARIETAL LOBE

-->  d. FRONTAL LOBE

question_image

Identify the visual processing center of the mammalian brain containing most of the anatomical region of the visual cortex.

-->  a. V

b. M

c. F

d. D

question_image

Where is the spinal cord?

a. R

-->  b. C

c. D

d. W

question_image

Identify the brain in this picture

a. R

b. N

c. V

-->  d. T

question_image

In the diagram which label refers to the brain?

a. R

b. V

-->  c. T

d. N

question_image

Identify the ganglion in the following image:

a. V

b. T

-->  c. N

d. R

question_image

Identify X

a. PARIETAL LOBE

-->  b. OCCIPITAL LOBE

c. FRONTAL LOBE

d. TEMPORAL LOBE

question_image

Where's the temporal lobe located?

a. P

-->  b. R

c. V

d. X

question_image

Which represents the frontal lobe?

a. V

b. P

-->  c. D

d. X

question_image

What is the Neuron Part labeled S?

a. CELL BODY

b. AXON

c. NUCLEUS

-->  d. DENDRITE

question_image

Which label represents dentrites?

a. A

b. X

-->  c. S

d. M

question_image

Where are the dendrites?

-->  a. S

b. A

c. X

d. H

question_image

Select the dendrites.

a. M

b. K

-->  c. F

d. R

question_image

Which label indicates the neuron's axon?

a. U

b. P

-->  c. K

d. M

question_image

In the neural cell pictured below, which letter label is used to depict the Myelin Sheath?

a. U

b. K

-->  c. M

d. P

question_image

What surrounds the node of ranvier?

-->  a. MYELIN SHEATH

b. CELL MEMBRANE

c. AXON

d. OLIGODENDROCYTE

question_image

What happens when nerve receptors are blocked?

a. THE SYNAPSE IS BLOCKED

b. SYNAPSE REPAIRS ITSELF TO UNBLOCK THE RECEPTOR

-->  c. NEUROTRANSMITTERS CAN NOT BE RECEIVED OR TRANSMITTED

d. CENTRAL NERVOUS SYSTEM MALFUNCTIONS

question_image

Which letter denotes the dendrites?

a. U

b. K

c. P

-->  d. F

question_image

What letter refers to the dendrite structure?

a. U

b. M

-->  c. C

d. X

question_image

Which part of the neuron receives nerve impulses from other cells?

a. M

b. D

-->  c. C

d. X

question_image

Check the dendrites.

-->  a. C

b. V

c. D

d. X

question_image

Which label represents the nucleus?

a. H

b. N

-->  c. J

d. S

question_image

Which letter represents the Mitochondrion?

-->  a. H

b. C

c. U

d. J

question_image

This receives nerve impulses from other nerve cells.

-->  a. U

b. T

c. D

d. J

question_image

Which part of the neuron is labeled H?

a. AXON

-->  b. MITOCHONDRION

c. NUCLEUS

d. NODE OF RANVIER

question_image

Select the non-mielinized portion of the axon.

a. C

b. D

-->  c. N

d. U

question_image

What letter represents the axon?

a. U

b. J

c. H

-->  d. A

question_image

What label refers to the nucleus?

a. X

b. E

c. L

-->  d. T

question_image

Which label refers to the nucleus?

a. L

-->  b. T

c. D

d. P

question_image

What letter represents dentrites?

-->  a. L

b. M

c. P

d. D

question_image

By what letter is the axon represented in the diagram?

-->  a. Y

b. U

c. R

d. L

question_image

In the diagram, what part of the neuron has the label L?

a. TERMINAL BUTTONS

b. AXON

c. CELL BODY

-->  d. DENDRITES

question_image

Where is the cell body?

-->  a. R

b. K

c. L

d. H

question_image

Which of these letters denotes the part of the nerve cell that receives impulses from other cells?

a. K

-->  b. L

c. R

d. U

question_image

By what letter is the dendrite represented in the diagram?

a. M

b. L

-->  c. N

d. R

question_image

Which label shows the soma?

-->  a. R

b. L

c. N

d. M

question_image

Where are nerve signals received here?

-->  a. N

b. H

c. M

d. L

question_image

Where is the axiom located?

a. H

b. N

c. R

-->  d. M

question_image

In the diagram which label shows the cell's nucleus?

-->  a. H

b. T

c. L

d. X

question_image

Which letter points to a Schwann cell?

a. T

-->  b. U

c. X

d. D

question_image

What cellular specialization helps in the conduction of the electrical impulses?

-->  a. X

b. L

c. H

d. R

question_image

Where is the cell body?

a. R

b. X

-->  c. A[

d. U

question_image

Which letter represents the Dendrite?

-->  a. M

b. S

c. D

d. A

question_image

Which letter represents the Myelin sheath?

a. C

b. D

c. A

-->  d. V

question_image

Identify the part that receives nerve impulses from other cells.

-->  a. M

b. A

c. S

d. U

question_image

Which represents the dendrite?

a. A

b. U

c. S

-->  d. M

question_image

What is represented by label C?

-->  a. DENDRITES

b. NERVE ENDING

c. CELL BODY

d. AXON

question_image

It contains all the genetic material of the neuron.

-->  a. D

b. C

c. P

d. Y

question_image

Which letter represents the SOMA?

a. A

b. U

-->  c. V

d. M

question_image

Which of the labeled elements shows the nucleus of the neuron?

-->  a. M

b. U

c. A

d. V

question_image

Identify the part that passes nerve impulses on to other cells.

a. R

b. P

c. U

-->  d. E

question_image

Which of the labeled elements has the function of passing impulses to other cells?

-->  a. E

b. U

c. P

d. F

question_image

What is the front area of the frontal lobe called?

a. Central Sulcus

-->  b. Prefrontal Lobe

c. Sylvian Fissure

d. Temporal Lobe

question_image

Which part of the brain is located beneath the occipital lobe?

-->  a. Cerebellum

b. Frontal Lobe

c. Parietal Lobe

d. Central Sulcus

question_image

How many lobes does the human brain have?

-->  a. 5

b. 3

c. 6

d. 4

question_image

The human brain is made up of how many parts?

-->  a. 10

b. 8

c. 9

d. 7

question_image

WHAT IS NEXT TO OCCIPITAL LOBE

-->  a. PARIETAL LOBE

b. CENTRAL SULCUS

c. PREFONTAL LOBE

d. FRONTAL LOBE

question_image

Which of the following is connected to the medulla?

a. Parietal lobe

b. Frontal lobe

c. Central sulcus

-->  d. Temporal lobe

question_image

Which organ is located between the Midbrain and Medulla?

a. Thalamus

-->  b. Pons

c. Cerebellum

d. Brainstem

question_image

How many parts make up the brain stem?

-->  a. 3

b. 5

c. 4

d. 2

question_image

How many parts of the brain are shown in the diagram?

a. 8

-->  b. 9

c. 7

d. 10

question_image

What is a part of the brainstem?

a. Thalamus

b. Pituitary gland

c. Cerebral cortex

-->  d. Pons

question_image

What is the lobe that is colored red?

a. Occipital Lobe

b. Parietal Lobe

c. Temporal Lobe

-->  d. Frontal Lobe

question_image

Which part sends data to and from the brain?

a. temporal lobe

b. frontal lobe

c. parietal lobe

-->  d. spinal cord

question_image

Which lobe of the brain is located at the back of the skull?

a. Parietal lobe

b. Frontal lobe

c. Temporal lobe

-->  d. Occipital lobe

question_image

Which part of the brain is closest to the spinal cord?

a. temporal lobe

b. parietal lobe

-->  c. Cerebellum

d. Frontal lobe

question_image

How many lobes do the brain have?

-->  a. 4

b. 5

c. 3

d. 2

question_image

How many parts make up the human brain?

a. 4

b. 9

c. 7

-->  d. 6

question_image

What is the area in red called?

a. temporal lobe

b. occipital lobe

c. parietal lobe

-->  d. frontal lobe

question_image

What helps transmit nerve signals from brain to internal organs?

a. cerebellum

b. temporal lobe

c. pons

-->  d. spinal cord

question_image

Which of these is at the bottom compared to the others?

a. occipital lobe

b. parietal lobe

-->  c. medulla oblongata

d. frontal lobe

question_image

How many lobes are there in the brain?

a. 3

-->  b. 4

c. 2

d. 5

question_image

How many lobes does the brain have?

a. 1

-->  b. 4

c. 2

d. 3

question_image

If the medulla oblongata is removed, what happens?

a. The brain functions as normal.

b. The brain's computational power is increased.

c. The brain's computational power is reduced.

-->  d. The brain will not be able to receive data from other parts of the body.

question_image

What's between ponds and spinal cord?

a. frontal lobe

b. moter cortex

c. angular gyrus

-->  d. medulla oblongata

question_image

Which part of the nervous system extends to the extremities?

a. Ganglion

-->  b. Nerves

c. Brain

d. Spinal cord

question_image

Which structure is involved in the transmission of neural signals between the brain and the body?

a. Brain

b. Ganglion

c. Nerve

-->  d. Spinal Cord

question_image

How many nervous systems make up the human body?

a. 3

b. 4

-->  c. 2

d. 6

question_image

What is the topmost part of the central nervous system?

a. nerve

-->  b. brain

c. spinal cord

d. ganglion

question_image

Which part connects the peripheral nervous system to the brain?

a. Brain

b. Stomach

-->  c. Spinal cord

d. Pancreas

question_image

What do you call the part of the nervous system that connects the peripheral nerves and the brain?

a. Peripheral Nerve

-->  b. Spinal Cord

c. Brain

d. Highway Nerve

question_image

When you stub your toe, where is this sensation first transmitted?

a. The brain

b. In the spinal cord

-->  c. Peripheral nerves in the toe

d. Peripheral nerves in the upper leg

question_image

At how many parts of the body peripheral nerves are located?

a. 2

-->  b. 4

c. 5

d. 1

question_image

How are peripheral nerves connected to the brain?

a. Through bone marrows.

-->  b. Through the spinal cord.

c. Through arteries.

d. Directly connects to the brain.

question_image

What connects the brain to all the peripheral nerves in the body?

-->  a. spinal cord

b. brain

c. peripheral nerves

d. veins

question_image

Which of these is at the bottom compared to the others?

a. cerebellum

-->  b. brain stem

c. occipital lobe

d. frontal lobe

question_image

Which part of the brain connects the brain and the spinal cord?

a. Cerebellum

b. Occipital lobe

-->  c. Brain stem

d. Frontal lobe

question_image

How many functions are processed in the frontal lobe?

-->  a. 1

b. 2

c. 4

d. 3

question_image

How many lobes are identified in the diagram?

a. 2

b. 3

c. 5

-->  d. 4

question_image

What is the bottom-most part called?

a. parietal lobe

b. frontal lobe

-->  c. brain stem

d. cerebellum

question_image

Which part of the brain is responsible for movement?

a. occipital lobe

-->  b. frontal lobe

c. parietal lobe

d. temporal lobe

question_image

Identify the part of the brain that information travels through to the rest of the body.

a. Cerebellum

b. Pons

c. Pineal gland

-->  d. Spinal cord

question_image

Below the brain stem lies which of the following?

a. Optic nerve

-->  b. Spinal cord

c. Cerebrum

d. Pineal gland

question_image

What connects the spine with the medulla?

a. Ventricles

-->  b. The spinal cord

c. Cerebrum

d. Choroid plexus

question_image

From how many parts is the brain stem formed?

-->  a. 2

b. 3

c. 1

d. 5

question_image

What controls growth and development?

-->  a. pituitary gland

b. choroid plexus

c. cerebrum

d. optic nerve

question_image

What is the rear part of the brain called?

a. pons

b. medulla

-->  c. cerebellum

d. pituitary gland

question_image

Which is the largest part of the brain?

a. Ventricles

b. Midbrain

-->  c. The cerebrum.

d. Medulla

question_image

What connects the brain stem with the Pituitary gland?

a. Cerebellum

-->  b. Hypothalamus

c. Cerebrum

d. Medulla

question_image

What part of the brain is the cerebrum connected to?

a. Hypothalamus

b. Brain stem

-->  c. Corpus callosum

d. Ventricles

question_image

What's right above the ventricles?

a. pons

b. thalamus

-->  c. corpus callosum

d. cerebrum

question_image

Identify the part of the body that produces human growth hormone.

-->  a. Pituitary gland

b. Hypothalamus

c. Cerebrum

d. Pineal gland

question_image

The pituitary gland is connected with?

a. ventricles

b. choroid plexus

-->  c. hypothalamus

d. cerebrum

question_image

What's the name of the biggest organ in the depicted system?

a. Choroid plexus

b. Pineal gland

c. Optic nerve

-->  d. Cerebrum

question_image

How many parts make up the brain stem?

a. 1

b. 4

c. 3

-->  d. 2

question_image

Pons is part of the brain stem, what is the other part called?

a. Ventricles

b. Pineal gland

-->  c. Medulla

d. Hypothalamus

question_image

What connects the brain to the eyes?

a. cerebrum

b. ventricles

-->  c. optic nerve

d. choroid plexus

question_image

Which part sends data to and from the brain?

a. capillaries

b. nerve

-->  c. spinal cord

d. myelin sheath

question_image

What does compose the Peripheral Nervous System?

a. Brain.

-->  b. Nerve.

c. Spinal cord and Brain.

d. Spinal cord.

question_image

What is the part of the central nervous system that is connected to the spinal cord?

a. Spinal Cord

-->  b. Brain

c. Peripheral nervous system

d. Peripheral Nerves

question_image

How many parts make up the central nervous system?

a. 4

-->  b. 2

c. 3

d. 1

question_image

What is the topmost part of the central nervous system?

a. adenoid

b. nerve

c. spinal cord

-->  d. brain

question_image

The frontal cortex is in front of?

a. Striatum

b. VTA

-->  c. Nucleus accumbens

d. Substantia nigra

question_image

How many parts is indicated in the diagram?

a. 1

b. 4

c. 8

-->  d. 6

question_image

What would happen if we had no frontal cortex?

-->  a. We wouldn't be capable of reasoning.

b. We would lose the ability to hear.

c. We would lose the sense of touch.

d. We would lose the ability to see.

question_image

Where does the VTA send neurons to?

-->  a. Hippocampus

b. Nucleus accumbens

c. Frontal cortex

d. Striatum

question_image

Which part of the brain is responsible for memory storage?

a. frontal lobe

b. fornix

c. corpus callosum

-->  d. hippocampus

question_image

Which area is involved in memory storage?

a. Corpus callosum

-->  b. Hippocampus

c. Fornix

d. Thalamus

question_image

What function of the brain does the Frontal Lobe control?

a. touch

b. hearing

c. sight

-->  d. Reasoning

question_image

Which lobe of the brain is responsible for hearing?

a. Frontal lobe

-->  b. Temporal lobe

c. Occipital lobe

d. Parietal lobe

question_image

Which part of the brain is the closes to the Spinal Cord?

a. Temperal Lobe

-->  b. Cerebellum

c. Frontal Lobe

d. Occipital Lobe

question_image

How many lobes does the brain have?

a. 1

b. 2

-->  c. 4

d. 3

question_image

What is the bottom part called?

a. occipital lobe

b. parietal lobe

c. motor cortex

-->  d. spinal cord

question_image

Which controls the eyes and vision?

a. Parietal Lobe

b. Cerebellum

-->  c. Occipital Lobe

d. Frontal Lobe

question_image

Which lobe is coloured green in the diagram?

-->  a. Occipital

b. Temporal

c. Parietal

d. Frontal

question_image

Part of the brain is commonly associated with reasoning

a. occipital lobe

b. temporal lobe

c. cerebellum

-->  d. frontal lobe

question_image

Which part of the brain connects to the spinal cord?

-->  a. brain stem

b. cerebellum

c. frontal lobe

d. parietal lobe

question_image

Which parts of the brain touch the cerebellum?

a. Occipital lobe and temporal lobe

-->  b. Temporal lobe and brainstem

c. Parietal lobe and brainstem

d. Temporal lobe and frontal lobe

question_image

How many lobes does the brain contain?

a. 1

b. 6

-->  c. 4

d. 2

question_image

What happens if a clot forms in the temporal lobe?

a. Reasoning is affected

b. Sense of touch is affected

-->  c. Hearing is affected

d. Sight is affected

question_image

What is the area in yellow called?

a. frontal lobe

-->  b. temporal lobe

c. brainstem

d. parietal lobe

question_image

How many lobes does the brain have?

a. 2

b. 3

-->  c. 4

d. 1

question_image

How many total parts in the brain stem?

a. 1

-->  b. 3

c. 4

d. 2

question_image

What does the brain stem consist of?

a. basal ganglia

b. parietal lobe

c. frontal lobe

-->  d. midbrain, pons, medulla

question_image

Which body system is displayed in the diagram?

a. Circulatory

b. Immune

c. Digestive

-->  d. Nervous

question_image

What is the nerve in the hand?

a. Spinal cord

-->  b. Unlar nerve

c. Medina nerve

d. Radial nerve

question_image

Which nerves are most likely responsible for headaches?

a. unlar nerves

-->  b. cranial nerves

c. tibial nerves

d. lumbar nerves

question_image

Which nerves bring data from the feet to the brain and vice-versa?

a. medina nerve

b. sacral nerves

c. radial nerve

-->  d. tibial nerve

question_image

Where is located the spinal cord?

-->  a. neck

b. head

c. legs

d. back

question_image

Which nerve is located at the lowest part of the body?

a. Median nerve

b. Unlar nerve

c. Radial nerve

-->  d. Peroneal nerve

question_image

How many parts make up the nervous system?

a. 7

-->  b. 14

c. 10

d. 11

question_image

What is the topmost nerve called?

a. thoracic nerves

b. medina nerve

c. sciatic nerves

-->  d. cranial nerves

question_image

Part of the brain associated with reasoning

a. Occipital lobe

b. Medulla Oblongata

-->  c. Frontal Lobe

d. Parietal Lobe

question_image

Which organ of the brain is nearest to the spinal cord?

a. Frontal lobe

b. Temporal lobe

c. Parietal lobe

-->  d. Medulla oblongata

question_image

How many lobes does the brain have?

-->  a. 4

b. 3

c. 2

d. 1

question_image

How many lobes does the human brain have?

a. 8

b. 7

-->  c. 4

d. 5

question_image

What is the area in yellow called?

a. Pons

b. parietal lobe

c. Medulla

-->  d. frontal lobe

question_image

Which lobe of the brain assists us to see objects?

a. Temporal Lobe.

b. Frontal Lobe.

-->  c. Occipital Lobe.

d. Parietal Lobe.

question_image

What is the nerve located near the wrist called?

a. Lumbar Nerve

-->  b. Ulnar Nerve

c. Pudental Nerve

d. Median Nerve

question_image

Which part of the nervous system shown in the diagram carries nerve impulses between the body and the brain?

a. Radial Nerve

b. Tibial Nerve

-->  c. Spinal Cord

d. Median Nerve

question_image

What connects the brain with the nerves?

-->  a. Spinal Cord

b. Median Nerve

c. Thoracic Nerves

d. Radial Nerve

question_image

What is a nerve that is located in the legs?

a. Median Nerve

b. Thoracic Nerves

c. Radial Nerve

-->  d. Tibial Nerve

question_image

How many types of nerves are in the diagram of the nervous system?

a. 12

b. 11

c. 9

-->  d. 10

question_image

How many types of nerves are in the hands of the body?

a. 3

-->  b. 2

c. 1

d. 4

question_image

What is the topmost part called?

a. tibial nerve

-->  b. brain

c. sciatic nerve

d. median nerve

question_image

What would happen if there were no radial nerves?

a. We wouldn't be able to have any sensations at all.

b. We would lose the ability to feel anything in our brain.

-->  c. We wouldn't be able to feel any sensations in our arms and wouldn't be able to move them.

d. We would become immune to radiation.

question_image

Which organ of the brain sits on top of the spinal cord?

a. cingulate gyrus

-->  b. medulla

c. thalamus

d. parietal lobe

question_image

How many lobes are labeled in the diagram?

-->  a. 3

b. 5

c. 2

d. 4

question_image

Where is the cerebellum located?

a. behind the frontal lobe

b. front of the brain

c. next to the lateral ventricle

-->  d. Behind the 4th ventricle

question_image

How many ventricles are shown in the diagram?

a. 3

b. 4

c. 1

-->  d. 2

question_image

How many lobes do the brain have?

-->  a. 3

b. 4

c. 6

d. 5

question_image

What is right under the medulla?

-->  a. spinal cord

b. parietal lobe

c. lateral ventricle

d. thalamus

question_image

Which of the following parts is located in the brain stem, anterior to the cerebellum?

a. Parietal lobe

b. Thalamus

c. Hypothalamus

-->  d. Medulla

question_image

What is the center of the nervous system?

a. Tibial nerve

-->  b. Brain

c. Pudental nerve

d. Intercostal nerves

question_image

What connects the Brain to each of the nerves?

a. Brachial Plexus

b. Lumbar Plexus

-->  c. Spinal Cord

d. Cerebellum

question_image

What links the brain and the subcostal nerve?

-->  a. spinal cord

b. radial nerve

c. cerebellum

d. tibial nerve

question_image

How many nerves are labelled?

a. 22

b. 20

-->  c. 18

d. 16

question_image

What does the brain lead into?

-->  a. Spinal cord

b. ulnar nerve

c. Lumbar plexus

d. Brachial plexus

question_image

Which part of the nervous system serves as the control center of the nervous system and the body as a whole?

a. spinal cord

b. brachial prexus

-->  c. brain

d. cerebellum

question_image

What is the part colored in green?

-->  a. Occipital lobe

b. Cerebellum

c. Frontal lobe

d. Parietal lobe

question_image

What is associated with thought and action?

a. occipital lobe

-->  b. cerebrum

c. cerebellum

d. parietal lobe

question_image

Which part of the brain processes vision?

a. The Parietal Lobe

b. The Cerebellum

c. The Frontal Lobe

-->  d. The Occipital Lobe

question_image

What does connect temporal lobe to spinal cord?

a. Left hemisphere.

b. Frontal lobe.

c. Parietal lobe.

-->  d. Brain stem.

question_image

What is the brain attached to?

a. frontal lobe

-->  b. spinal cord

c. temporal lobe

d. cerebellum

question_image

How many sections of the brain are shown here?

a. 4

b. 7

-->  c. 8

d. 3

question_image

What is the bottom part called?

a. brain stem

b. frontal lobe

-->  c. spinal cord

d. parietal lobe

question_image

Where is the brain?

-->  a. Over the spinal cord

b. Next to the ganglion

c. Behind the nerves

d. Below the spinal cord

question_image

Name the part of the Central Nervous System that carries nerve impulses back and forth between the body and brain.

a. Ganglion

b. Nerve

-->  c. Spinal cord

d. Brain

question_image

What connects brain to rest of the organs in the central nervous system?

-->  a. spinal cord

b. veins

c. ganglion

d. nerve

question_image

What part of the nervous system runs down the center of the body?

a. ganglion

-->  b. Spinal cord

c. nerves

d. brain

question_image

What makes up the central nervous system?

-->  a. brain, spinal cord

b. nerves

c. peripheral

d. ganglion

question_image

What is the topmost part of the central nervous system?

a. ganglion

b. spinal cord

-->  c. brain

d. nerve

question_image

Where on the spinal cord, would an injury have the greatest effect on the body?

a. At the base of the spine

-->  b. Nearest to the brain

c. Bottom of the ribcage

d. Around the shoulders

question_image

Which lobe of the brain is generally associated with reasoning?

a. Occipital lobe

-->  b. Frontal lobe

c. Perietal lobe

d. Temporal lobe

question_image

According to the diagram, how many lobes does the human brain have?

a. 6

-->  b. 4

c. 5

d. 3

question_image

What connects the brain to the rest of the body?

a. occipital lobe

b. lateral sulcus

c. frontal lobe

-->  d. spinal cord

question_image

Which of these is the lowest on the brain?

-->  a. Medulla oblongata

b. pons

c. occipital lobe

d. frontal lobe

question_image

How many lobes does the brain have?

a. 3

-->  b. 4

c. 1

d. 2

question_image

How many lobes does the human brain have?

-->  a. 4

b. 1

c. 6

d. 2

question_image

What is the bottom part called?

a. parietal lobe

b. frontal lobe

-->  c. spinal cord

d. occipital lobe

question_image

Which part of the brain controls body position, coordination, and balance?

a. occipital lobe

-->  b. cerebellum

c. lateral sulcus

d. frontal lobe

question_image

Which part is colored with red?

a. Temporal Lobe

b. Parietal Lobe

-->  c. Frontal lobe

d. Occipital Lobe

question_image

Which lobe is attached to the spinal cord?

-->  a. The temporal lobe

b. The occipital lobe

c. The frontal lobe

d. The cerebellum

question_image

Which lobe is located at the front of the brain and is responsible for reasoning?

a. Temporal

b. Parietal

c. Occipital

-->  d. Frontal

question_image

How many lobes of the brain are shown below?

a. 5

b. 2

-->  c. 4

d. 3

question_image

How many parts does the brain have in the diagram below?

-->  a. 6

b. 5

c. 4

d. 2

question_image

What is the bottom part called?

-->  a. spinal cord

b. temporal lobe

c. parietal lobe

d. frontal lobe

question_image

What is located at the front of the brain?

a. Lateral sulcus

b. Parietal lobe

-->  c. Frontal lobe

d. Occipital lobe

question_image

Which part separates the parietal lobe from the frontal lobe

a. Parietal lobe

b. Frontal lobe

c. Lateral sulcus

-->  d. Central sulcus

question_image

What sulcus is between parietal lobe and frontal lobe?

a. Lateral sulcus.

b. Parieto-frontal sulcus.

c. Parieto-occipital sulcus.

-->  d. Central sulcus.

question_image

How many categories is sulcus divided into?

a. 3

b. 4

-->  c. 2

d. 1

question_image

How many lobes does the brain have?

a. 2

b. 3

-->  c. 4

d. 1

question_image

What will happen if the occipital lobe is damaged?

a. there will be hearing problem

b. reasoning problem will occur

-->  c. there will be problem in sight/seeing

d. touch problem

question_image

What do you call the tiny gap between the two neurons in which the messages must cross?

-->  a. Synapse

b. Cell Membrane

c. Axon

d. Dendrites

question_image

What is the structure present at the end of a cell, connecting it to another cell?

-->  a. Synapse

b. Node of Ranvier

c. Axon

d. Oligodendrocyte

question_image

Which part of the neuron receives nerve impulses from other cells?

a. axon

b. myelin sheath

c. cell membrane

-->  d. dendrites

question_image

What is the function of the cell membrane?

-->  a. To protect the cell from its surroundings

b. To absob nutrients

c. To conduct electrical impulses

d. To store genetic material

question_image

What lies between the Axon and the Nodes of Ranvier?

a. Nucleus

b. Dentries

-->  c. Myelin sheath

d. Motor end plate

question_image

How many parts are shown in the picture?

a. 8

b. 9

c. 6

-->  d. 7

question_image

How many parts does the neuron have?

a. 5

b. 8

c. 6

-->  d. 7

question_image

What is in between the Myelin sheath?

-->  a. Nodes of Ranvier

b. axon

c. cell body

d. dendrites

question_image

What is the core of the cell called?

a. Myelin

b. Dendrite

-->  c. Nucleus

d. Axon

question_image

What part receives nerve impulses from other cells?

a. Node of Ranvier

-->  b. Dendrite

c. Nucleus

d. Axon

question_image

Which of the following receive nerve impulses from other cells?

a. Nucleus

-->  b. Dendrite

c. Cell Body

d. Axon

question_image

What connects the nucleus and dendrite in the diagram?

a. myelin sheath

b. axon

-->  c. cell body

d. node of ranvier

question_image

How many parts of the cell are between the cell body and the axon terminals?

a. Five

b. Two

-->  c. Three

d. One

question_image

What happens if the axons malfunction?

-->  a. There would be a delay in transmission of impulse.

b. Nothing happens.

c. Neuron would die.

d. There would be a problem in receiving impulses.

question_image

Which part of the neuron receive nerve impulses from other cells?

a. Mitochodrion

b. Cell body

c. Axon

-->  d. Dendrites

question_image

What is at the center of the round blue top part of the cell?

a. mitochondrion

b. axon

c. dendrites

-->  d. nucleus

question_image

What part of the neuron conducts nerve impulses to other cells?

a. Dendrites

b. Nucleus

-->  c. Axon

d. Mitochondrion

question_image

How many parts are labeled in below diagram?

-->  a. 9

b. 6

c. 7

d. 8

question_image

If we introduce a second neuron how would they communicate?

-->  a. By the axon terminals firing to the dendrites of the second neuron

b. Schwann cell firing to cell body

c. Dendrites firing to cell body

d. Cell body firing to axon terminals

question_image

What is at the center of the cell body?

a. dendrites

b. Schwann cell

-->  c. nucleus

d. axon

question_image

Identify the part of the neuron that surrounds the axon.

a. Node of Ranvier

b. Synapse

-->  c. Myelin sheath

d. Schwann cell

question_image

What is in between the myelin sheath?

a. synapses

-->  b. node of ranvier

c. dendrites

d. nucleus

question_image

What is the center of the cell body?

a. synapse

b. dendrite

c. Schwann cell

-->  d. The nucleus

question_image

How many parts are there in the neuron?

a. There are 3 parts

-->  b. There are 7 parts

c. There are 6 parts

d. There are 2 parts

question_image

What is a junction between two nerve cells, consisting of a minute gap across which impulses pass by diffusion of a neurotransmitter?

-->  a. Synapses

b. Nucleus

c. Dendrites

d. Myelin Sheath

question_image

What is in the middle of the cell body?

a. dendrites

b. axon hillock

-->  c. nucleus

d. axon

question_image

What is inside the cell body?

a. Myelin Sheath

-->  b. Nucleus

c. Axon

d. Dendrites

question_image

What is the gap between an axon and a dendrite called?

a. Cell body

b. Nucleus

c. Signal direction

-->  d. Synapse

question_image

How many parts are shown in the diagram below?

a. 7

b. 8

-->  c. 10

d. 9

question_image

Which part of the nervous system protects the axon?

a. Synaspe

b. Dendrites

-->  c. Myelin sheath

d. Nucleus

question_image

Where is the nucleus located?

a. In the synapse

b. At the end of the dendrites

-->  c. In the cell body

d. In the axon

question_image

What structures on the neuron that receive electrical messages?

a. nucleus

b. axon

-->  c. dendrites

d. myelin sheath

question_image

What lies between the nucleus and the axon terminals?

a. Dendrites

-->  b. Axon

c. Cell Body

d. Synapse

question_image

How much myelin sheath's does the neuron shown in the diagram have?

a. 3

-->  b. 5

c. 6

d. 4

question_image

What part of the nerve cell receives impulses from other cells?

a. nucleus

b. synapse

-->  c. dendrites

d. cell body

question_image

What protects the axon?

a. Dendrites

-->  b. Myelin sheath

c. Nucleus

d. Synapse

question_image

What connects the myelin sheath to each other?

a. schwann cell

-->  b. node of Ranvier

c. dendrites

d. axon

question_image

Within on the neuron, what is in the soma?

a. axon terminals

-->  b. nucleus

c. dendrites

d. schwann cell

question_image

How many Schwann cells in this neuron?

a. 1

-->  b. 5

c. 7

d. 3

question_image

What is a short branched extension of a nerve cell, along which impulses received from other cells at synapses are transmitted to the cell body?

a. Nucleus

b. Axon Terminal

c. Cell Body

-->  d. Dendrite

question_image

What is inside the cell body?

-->  a. nucleus

b. axon terminals

c. dendrites

d. node of ranvier

question_image

How many parts are there in the structure of a typical neuron?

a. 6

b. 9

-->  c. 8

d. 7

question_image

What is at the center of the cell body?

a. node of Ranvier

b. Schwann's cells

c. dendrites

-->  d. nucleus

question_image

Which part of the neuron can transmit impulses to many other cells?

a. Dendrites

b. Axon

-->  c. Axon terminals

d. Cell body

question_image

What part receives nerve impulses from other cells?

a. cell body

-->  b. dendrites

c. axon

d. input zone

question_image

What connects the axon terminals to the cell body?

a. Dendrites

b. Cytoplasm

c. Chloroplast

-->  d. Axon

question_image

Which is part of the input zone?

a. Integration Zone

b. Axon

c. Axon terminals

-->  d. Cell body

question_image

How many zones does the neuron have?

-->  a. 4

b. 5

c. 2

d. 3

question_image

The Input zone have how many parts?

-->  a. 2

b. 3

c. 4

d. 1

question_image

What are the hair-like protrusions coming out of the cell body called?

-->  a. dendrites

b. nodes

c. axon

d. axon terminals

question_image

What is a long, slender projection of a nerve cell that typically conducts electrical impulses away from the neuron's cell body?

a. Integration Zone

-->  b. Axon

c. Cell Body Dendrites

d. Input Zone

question_image

Which part of the cell connects one neuron to another?

a. Cell Body

b. Axon

c. Action Potential

-->  d. Dendrites

question_image

What connects the terminal buttons to the cell body?

a. nothing

b. myelin sheath

-->  c. axon

d. dendrites

question_image

What part passes messages away from the cell body to other neurons, muscles, or glands?

a. Dendrites

-->  b. Axon

c. Terminal Buttons

d. Cell Body

question_image

How many items are the Dendrites illustrated in the diagram?

-->  a. 2

b. 1

c. 3

d. 4

question_image

How many somas are present in the diagram?

a. 4

-->  b. 2

c. 3

d. 1

question_image

How does the dendrites function?

a. by protecting the cell

b. forms junction in the cell

-->  c. by receiving signals from another cell

d. sends electrical signal

question_image

What are the vein-like protrusions coming out of the cell body called?

a. axon

-->  b. dendrites

c. myelin sheath

d. terminal buttons

question_image

Identify the part of the neuron that passes on the nerve impulses to other cells.

a. Synapse

b. Soma

-->  c. Axon

d. Dendrites

question_image

What is around the axon?

a. dendrite

b. soma

-->  c. myelin

d. axon hillock

question_image

Which part passes on the nerve impulses to other cells?

a. Dendrite

-->  b. Axon

c. Soma

d. Myelin

question_image

What connects the soma to the synapse?

a. Myelin

-->  b. Axon

c. Axon terminal

d. Dendrite

question_image

How many parts do the synapse have?

a. 4

b. 2

c. 1

-->  d. 3

question_image

What are the hair-like protrusions coming out of the cell body called?

-->  a. dendrite

b. axon

c. axon hillock

d. myelin

question_image

Which contains the nucleus and other organelles?

-->  a. Soma (Cell Body)

b. Myelin

c. Dendrite

d. Axon

question_image

What covers the Schwann cells?

a. Axon terminal

b. Cell body

c. Nucleus

-->  d. Myelin sheath

question_image

Inside which of the parts can the nucleus be found?

a. Dendrite

b. Node of Ranvier

c. Axon

-->  d. Cell body

question_image

How many of the items start with the letter A?

-->  a. 3

b. 1

c. 2

d. 4

question_image

Is the path of conduction in a neuron from the dendrite to the axon?

a. Not sure

b. No

-->  c. Yes

d. Data Insufficient

question_image

What is at the center of the cell body?

-->  a. nucleus

b. axon

c. axon terminal

d. dendrite

question_image

Which part of the neuron passes on the nerve impulses to other cells?

a. Synapse

b. Cell body

-->  c. Axon

d. Dendrite

question_image

Messages cross a tiny gap between two neurons. What is this gap called?

a. Axon

b. Dendrite

-->  c. Synapse

d. Oligodendrocyte

question_image

What is another name for the cell body?

a. Dendrite

-->  b. Soma

c. Axon

d. Cell Membrane

question_image

How many oligodendrocytes are in the image?

a. 3

b. 1

c. 4

-->  d. 2

question_image

What would happen if the neuron had no axon?

a. Dendrites will pass on the nerve impulses to other cells.

b. The cell body will relay the nerve impulses to other cells.

-->  c. Nerve impulses cannot be transported to other cells.

d. Nerve impulses will still be passed on by the synapse.

question_image

Which of the following is the interconnection between two nerve cells?

a. Axon

b. Dendrite

c. Myelin Sheath

-->  d. Synapse

question_image

Identify the part of a neuron that passes on the nerve impulses to other cells.

-->  a. The axon.

b. Dendrite

c. Cell Body

d. Mitochondrion.

question_image

What structures on the neuron that receive electrical messages?

-->  a. dendrite

b. Soma

c. DNA

d. axon

question_image

What connects the cell body to the neuromuscular junction?

-->  a. axon

b. node of Ranvier

c. myelin sheath

d. dendrite

question_image

Which of the following are not part of the cell body?

a. Endoplasmic reticulum

b. Nucleus

c. DNA

-->  d. Axon

question_image

How many parts make up a neuron?

a. 21

b. 17

-->  c. 18

d. 19

question_image

How many Schwann cells are illustrated in the figure?

a. 1

-->  b. 2

c. 0

d. 3

question_image

What is a long, slender projection of a nerve cell that typically conducts electrical impulses away from the neuron's cell body?

a. Dendrite

-->  b. Axon

c. Soma

d. Myelin Sheath

question_image

What would happen if the myelin sheath was damaged?

a. The transmission of electrical impulses would cease

-->  b. The transmission of electrical impulses would decrease in speed

c. The transmission of electrical impulses would not be altered

d. The transmission of electrical impulses would increase in speed

question_image

What receives nerve impulses from other cells?

a. terminal buttons

b. axon

c. soma

-->  d. dendrites

question_image

What do you call the small gaps in the myelin sheath of a neuron which are between adjacent Schwann cells?

-->  a. Nodes of Ranvier

b. Axon Terminal

c. Terminal Buttons

d. Dendrites

question_image

What structure is contained within the Soma?

a. Nodes of Ranvier

b. Myelin Sheath

-->  c. Nucleus

d. Dendrites

question_image

How many nuclei does a neuron have?

a. 2

b. 3

-->  c. 1

d. 4

question_image

What is at the center of the soma?

a. axon hillock

b. dendrites

c. axon terminal

-->  d. nucleus

question_image

What is not part of a neuron

a. soma

b. axon

-->  c. fingers

d. dentrites

question_image

How many schwann cells are there in the picture?

a. 6

-->  b. 5

c. 4

d. 3

question_image

What is the name or the body cell?

a. Myelin

-->  b. soma

c. dendrite

d. axon

question_image

What is located in the center of the cell membrane

a. axon

-->  b. soma

c. air

d. dendrite

question_image

Where is the nucleus located?

a. terminal buttons

b. dentrites

-->  c. soma

d. axon

question_image

How many parts of the central nervous system are identified in the diagram?

a. 1

b. 4

-->  c. 2

d. 3

question_image

Identify the pons

a. P

-->  b. U

c. V

d. E

question_image

Identify the axon

a. V

b. D

c. P

-->  d. S