Human Reproduction 3-2-15

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How does the production of male gametes differ from that of female gametes

A female is born with all of her potential gametes, whereas a mature male produces them everyday.

Secondary sex characteristics are traits that are

caused by sex hormones but are not directly related to reproduction

Estrogen and progesterone are examples of

hormones

What happens if an egg cell is not fertilized after it is released

it breaks down and is passed out of the female's body.

Which statement does not correctly describe an adaptation of the human female reproductive system

it provides for external fertilization of an egg

The scrotum is located outside the body activity, enabling healthy sperm to form because

its temperature is lower than that of the body

If fertilization of the egg does not occur after ovulation, the

level of progesterone decreases.

Why does the lining of the uterus thicken during the first half of the menstrual cycle

to prepare to nurture an embryo

Why does menstruation occur?

to remove an unfertilized egg from the uterus

The reproductive system of the human male produces gametes and

transfers gametes to the female for internal fertilization

The development of a human female's egg cells occurs within her

ovaries

The testes are adapted to produce

sperm cells that may be involved in fertilization

Most of the semen consists of

sugar

ATP is important to sperm cells because it

supplies the energy they need to move

In the male, meiotic cell division( that is sperm cell formation) occurs within

testes

Regulation of sexual reproductive cycles of human males is related most directly to the presence of the hormone

testosterone

The shape of the sperm can best be described as

a head with a long tail

What function does the placenta serve

Materials are exchanged between fetal and maternal blood


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