female reproductive system

the female reproductive system functions

Most of the male reproductive organs are outside of the body. But female reproductive organs are inside of the body. The male and female organs also look very different and have different jobs. Two of the functions of the female reproductive system are similar to the functions of the male reproductive system. The female system: 1. Produces gametes, the reproductive cells, which are called eggs in females. 2. Secretes a major sex hormone, estrogen. One of the main roles of the female reproductive system is to produce eggs. Eggs ( Figure 1.1) are female gametes, and they are made in the ovaries. After puberty, females release only one egg at a time. Eggs are actually made in the body before birth, but they do not fully develop until later in life. Like sperm, eggs are produced by meiosis, so they contain half the number of chromosomes as the original cell. Another role of the female system is to secrete estrogen. Estrogen is the main sex hormone in females. Estrogen has two major roles: 1. During the teen years, estrogen causes the reproductive organs to develop. It also causes other female traits to develop. For example, it causes the breasts to grow. 2. During adulthood, estrogen is needed for a woman to release eggs. On average, a woman releases one egg each month from her ovaries. The female reproductive system has another important function. After puberty, the female reproductive system must prepare itself to accept a fertilized egg each cycle (about every month). This cycle is controlled by a well-planned and very complex interplay of hormones. If an egg is not fertilized, the system must prepare itself again the next cycle. The female reproductive system also supports a baby as it develops before birth, and it facilitates the babys birth at the end of pregnancy.

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instructional diagrams

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questions

all of the eggs a woman will ever have are produced before birth.

-->  a. true

b. false

the female reproductive system prepares itself every week to accept a fertilized egg.

a. true

-->  b. false

a human cell has 46 chromosomes. how many chromosomes are in a human egg?

a) 92

b) 46

-->  c) 23

d) 2

what is the role of estrogen in the adult female?

-->  a) to release eggs

b) to maintain her reproductive structures

c) to develop female traits

d) all of the above

an average, how many eggs does a female release each cycle?

-->  a) 1

b) 2

c) 10

d) 100

what happens to the female reproductive system if an egg is not fertilized?

a) the system prepares itself to allow the baby to develop.

-->  b) the system must prepare itself again in case an egg is fertilized the next

c) the baby begins to grow in the uterus.

d) nothing happens

which best describes an egg cell?

a) round with a diploid nucleus

-->  b) round with a haploid nucleus

c) round with lots of cytoplasm

d) round with a flagella tail

diagram questions

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