Deck 32: Human Reproduction

Question 1

Into what structure is an egg ovulated (normally)?

A) uterine tube
B) uterus
C) stomach
D) ovary

Answer 1

uterine tube

Question 2

How does an oocyte get to the uterus?

A) It is ovulated directly into it.
B) It swims there using its flagellum.
C) It is already there: development of the oocyte occurs there.
D) It is pushed there by the cilia in the uterine tube.

Answer 2

It is pushed there by the cilia in the uterine tube.

Question 3

How many oocytes usually begin to mature in a woman each month?

A) None. Oocytes only mature every 6 months.
B) one in one ovary
C) many in each ovary
D) one in each ovary

Answer 3

many in each ovary

Question 4

Which of the following processes is unique to humans?

A) placental development
B) fertilization
C) internal development of the embryo
D) menstruation

Question 5

A major job of the corpus luteum is:

A) to maintain the endometrium.
B) to secrete LH.
C) to secrete FSH.
D) to secrete oxytocin.

Question 6

A 32-year-old woman consults her physician because she is not menstruating. The doctor orders a series of blood test to check the levels of her sex hormones during the time that she should be menstruating. The results show that the reason this woman is not menstruating is because she has an elevated level of:

A) GnRH
B) LH
C) FSH
D) estrogens.

Question 7

The endometrium is:

A) the lining of the vagina.
B) the lining of the uterine tube.
C) the lining of the uterus.
D) the covering of the ovary.

Question 8

Sperm are stored in the:

A) epididymis.
B) prostate gland.
C) vagina.
D) urethra

Question 9

Which of the following is a normal constituent of semen?

A) sperm
B) progesterone
C) estrogen
D) LH

Question 10

Which cell fuses with a sperm cell to accomplish fertilization?

A) an oogonium
B) a primary oocyte
C) a secondary oocyte
D) a tertiary oocyte

Question 11

Why is surfactant important for a baby?

A) Without it, the baby's brain doesn't function properly.
B) It causes proper development of the heart.
C) Without it, the baby can't breathe properly.
D) All of the above are important functions of surfactant.

Question 12

A pregnant woman (in her first trimester) is concerned that she has been exposed to a chemical that blocks estrogen and progesterone receptors so that the body does not recognize these hormones. The reason she should be worried about this is:

A) that FSH and LH may cause the release of another egg.
B) that menstruation may occur, thus causing the embryo to be lost.
C) that early labor may be triggered later in pregnancy.
D) that relaxin may be inhibited.

Question 13

In the human birth process, what does labor refer to?

A) expulsion of the placenta (afterbirth)
B) regular contractions of uterine muscles
C) dilation of the cervix
D) a hormonal cascade

Question 14

Your roommate has been diagnosed with an STD. He tells you that it can't be cured. Of the following choices, which STD is your roommate most likely to be suffering from?

A) syphilis
B) chlamydia
C) genital herpes
D) gonorrhea

Question 15

Which human birth control method is most effective at preventing disease transmission?

A) birth control pill
B) diaphragm
C) condom
D) intrauterine device

Question 16

In humans, the menstrual cycle is controlled by:

A) hormones.
B) the brain.
C) enzymes.
D) muscular contractions.

Question 17

A drop in which hormone triggers the onset of menstruation?

A) estrogen
B) follicle stimulating hormones (FSH)
C) progesterone
D) luteinizing hormone (LH)

Question 18

Human chorionic gonadotropin is produced by:

A) the ovarian follicle.
B) the embryo.
C) the anterior pituitary gland.
D) the corpus luteum.

Question 19

The proliferative phase of the uterine cycle is stimulated by an increase in which hormone?

A) estrogen
B) progestins
C) FSH
D) LH

Question 20

A spike in the level of LH:

A) stimulates menstruation.
B) stimulates endometrial proliferation.
C) stimulates ovulation.
D) stimulates pregnancy.

Question 21

Semen contains only sperm.

Question 22

The head of a sperm contains digestive enzymes.

Question 23

There are elaborate mechanisms to prevent more than one sperm from fertilizing a human egg because a triploid human would not develop normally.

Question 24

It is probable that labor in humans is initiated by the fetus when it is mature enough to exist outside its mother.

Question 25

The release of an egg from an ovary is called ________.

Question 26

How many ovaries does a normal man have?

Question 27

How many testes does a normal male have?

Question 28

What happens to mature sperm if they aren't ejaculated?

Question 29

Label the parts of the female reproductive system.

Question 30

Label the parts of the male reproductive system.

Question 31

Match the example of development with the trimester it occurs in.

-Heart begins to beat

A) Second trimester
B) Third trimester
C) First trimester

Question 32

Match the example of development with the trimester it occurs in.

-Baby kicks

A) Second trimester
B) Third trimester
C) First trimester

Question 33

Match the example of development with the trimester it occurs in.

-Gain of most weight

A) Second trimester
B) Third trimester
C) First trimester

Question 34

Match the example of development with the trimester it occurs in.

-Sucking reflex begins

A) Second trimester
B) Third trimester
C) First trimester

Question 35

Briefly explain why men don't have a menstrual cycle and women do.

Question 36

From development to ejaculation, trace the pathway that sperm travel through the male. Which structures are in the testis?

Question 37

What are the functions of the supporting glands in males?

Question 38

John and Jane are twins. Are they identical or fraternal twins, and why?

Question 39

Why do we say that a mother is "eating for two"?