Chapter 27

Question 1

What are male gametes called?

a) ova
b) sperm
c) testes
d) testosterone

Answer 1

b)sperm

Question 2

Leydig cells ________.

a) secrete testosterone
b) activate the sperm flagellum
c) support spermatogenesis
d) secrete seminal fluid

Answer 2

secrete testosterone

Question 3

Which hypothalamic hormone contributes to the regulation of the male reproductive system?
a)luteinizing hormone
b)gonadotropin-releasing c)hormone
d)follicle-stimulating hormone
androgens

Answer 3

gonadotropin-releasing

Question 4

What is the function of the epididymis?

a) sperm maturation and storage
b) produces the bulk of seminal fluid
c) provides nitric oxide needed for erections
d) spermatogenesis

Answer 4

sperm maturation and storage

Question 5

Spermatogenesis takes place in the ________.

a) prostate gland
b) glans penis
c) seminiferous tubules
d) ejaculatory duct

Answer 5

seminiferous tubules

Question 6

What are the female gonads called?

a) oocytes
b) ova
c) oviducts
d) ovaries

Answer 6

ovaries

Question 7

When do the oogonia undergo mitosis?

a) before birth
b) at puberty
c) at the beginning of each menstrual cycle
d) during fertilization

Answer 7

before birth

Question 8

From what structure does the corpus luteum originate?

a) uterine corpus
b) dominant follicle
c) fallopian tube
d) corpus albicans

Answer 8

dominant follicle

Question 9

Where does fertilization of the egg by the sperm typically occur?

a) vagina
b) uterus
c) uterine tube
d) ovary

Answer 9

uterine tube

Question 10

Why do estrogen levels fall after menopause?
a)The ovaries degrade.
b)There are no follicles left to produce estrogen.
c)The pituitary secretes a menopause-specific hormone.
The cells of the endometrium degenerate.

Answer 10

there are no follicles left to produce estrogen

Question 11

The vulva includes the ________.

a) lactiferous duct, rugae, and hymen
b) lactiferous duct, endometrium, and bulbourethral glands
c) mons pubis, endometrium, and hymen
d) mons pubis, labia majora, and Bartholin’s glands

Answer 11

mons pubis. labia majora, and Bartholin’s

Question 12

What controls whether an embryo will develop testes or ovaries?

a) pituitary gland
b) hypothalamus
c) Y chromosome
d) presence or absence of estrogen

Answer 12

Y chromosome

Question 13

Without SRY expression, an embryo will develop ________.

a) male reproductive structures
b) female reproductive structures
c) no reproductive structures
d) male reproductive structures 50 percent of the time and female reproductive structures 50 percent of the time

Answer 13

female reproductive structures

Question 14

The timing of puberty can be influenced by which of the following?

a) genes
b) stress
c) amount of body fat
d) all of the above

Answer 14

all of the above