Reproduction

Question 1

Prior to ejaculation, sperm are stored primarily in

A) the seminiferous tubules

B) the rete testis

C) the epididymis

D) the seminal vesicles

E) the ejaculatory ducts

Answer 1

C) the epididymis

Question 2

A low secretion of luteinizing hormone (LH) in the normal male adult would cause
A) decreased testosterone secretion
B) excessive beard growth
C) increased spermatogenesis
D) shrinkage of the anterior pituitary gland

Answer 2

A) decreased testosterone secretion

Question 3

T/F The amount of testosterone and sperm produced by the testes is dependent on the influence of FSH alone.

Answer 3

False

Question 4

Which male hormone inhibits the secretion of FSH? 
A) ACTH 
B) inhibin 
C) ICSH 
D) testosterone

Answer 4

B) inhibin

Question 5

Select the correct statement about testosterone control.
A) GnRH from the hypothalamus causes FSH and LH release from the anterior pituitary.
B) FSH stimulates testicular production of testosterone.
C) Inhibin and testosterone exert positive feedback on the hypothalamus and pituitary.
D) The pineal gland is believed to be the gland that exerts the most influence in testosterone control.

Answer 5

A) GnRH from the hypothalamus causes FSH and LH release from the anterior pituitary.

Question 6

A surge in _____ directly triggers ovulation.

Answer 6

LH

Question 7

Which hormone is absolutely necessary for ovulation to occur? 
A) LH 
B) FSH 
C) progesterone 
D) estrogen

Answer 7

A) LH

Question 8

Select the correct statement about the hormonal events of the ovarian cycle.
A) Rising levels of estrogen start follicle development.
B) High estrogen levels result in a surge of LH release.
C) The follicle begins to secrete progesterone in response to estrogen stimulation.
D) The LH surge stimulates further development of the secondary oocyte.

Answer 8

B) High estrogen levels result in a surge of LH release.

Question 9

The primary function of the uterus is to ________.
A) protect the ovaries
B) synthesize female hormones
C) regulate the ovarian and menstrual cycles
D) receive, retain, and nourish a fertilized ovum

Answer 9

D) receive, retain, and nourish a fertilized ovum

Question 10

The release of _______ encourages interstitial endocrine cells to release _______.

Answer 10

luteinizing hormone; testosterone

Question 11

Why does only one egg, rather than four eggs, develop during oogenesis, given that spermatogenesis results in four sperm formed from one stem cell?

Answer 11

The unequal cytoplasmic division that results in one egg and three polar bodies ensures that a fertilized egg has ample nutrients for its journey to the uterus.

Question 12

Which of the following glands are responsible for about 70% of the volume of semen?

Answer 12

seminal glands

Question 13

Which of the following hormones causes the oocyte to mature?

Answer 13

FSH

Question 14

The constancy of the chromosome number from one cell generation to the next is maintained through \_\_\_\_\_\_\_\_. 
A) mitosis 
B) meiosis 
C) cytokinesis 
D) DNA synthesis

Answer 14

B) meiosis

Question 15

T/F The secretions of the bulbourethral glands neutralize traces of acidic urine in the urethra and serve as a lubricant during sexual intercours

Answer 15

True

Question 16

The ability of a male to ejaculate is due to the action of \_\_\_\_\_\_\_\_.

A) detumescence

B) the dartos muscle

C) luteinizing hormone

D) the bulbospongiosus muscles

Answer 16

D) the bulbospongiosus muscles

Question 17

Which of the following hormones controls the release of anterior pituitary gonadotropins?

A) LH

B) FSH

C) GnRH

D) testosterone

Answer 17


C) GnRH

Question 18

The structures that receive the ovulated oocyte, providing a site for fertilization, are called \_\_\_\_\_\_\_\_.

A) the Graafian follicles

B) the fallopian tubes

C) the infundibula

D) the fimbriae

Answer 18

B) the fallopian tubes

Question 19

Which of the following constitutes the female counterpart of the male scrotum?

A) the clitoris

B) the greater vestibular glands

C) the labia majora

D) the mons pubis

Answer 19

C) the labia majora

Question 20

Spermiogenesis involves ________.

A) the formation of four haploid cells from a spermatogonium

B) the movement of sperm in the female genital tract

C) the formation of a functional sperm by the stripping away of superfluous cytoplasm

D) the sequence of events in the rete testis

Answer 20

C) the formation of a functional sperm by the stripping away of superfluous cytoplasm


Question 21

The cells that produce testosterone in the testis are called \_\_\_\_\_\_\_\_.

A) spermatocytes

B) spermatogonia

C) sustentacular cells

D) interstitial cells

Answer 21

D) interstitial cells

Question 22

The testicular cells that construct the blood-testis barrier are the \_\_\_\_\_\_\_\_.

A) spermatocytes

B) spermatogonia

C) sustentacular cells

D) interstitial cells

Answer 22

C) sustentacular cells

Question 23

The basic difference between spermatogenesis and oogenesis is that ________.

A) during spermatogenesis two more polar bodies are produced

B) the mature ovum is n, while the sperm is 2n

C) in oogenesis, one mature ovum is produced, and in spermatogenesis four mature sperm are produced from the parent cell

D) spermatogenesis involves mitosis and meiosis, but oogenesis involves meiosis only

Answer 23

C) in oogenesis, one mature ovum is produced, and in spermatogenesis four mature sperm are produced from the parent cell

Question 24

The seminal vesicles ________.

A) produce a yellowish fluid rich in fructose

B) produce about 90% of the volume of semen

C) encircle the upper part of the urethra

D) attach at the base of the penis

Answer 24

A) produce a yellowish fluid rich in fructose


Question 25

Which of the following statements about spermatogenesis is NOT true? 
A) The spermatogonium forms the primary spermatocyte.
 B) The primary spermatocyte forms two secondary spermatocytes. 
C) The secondary spermatocytes each form two spermatids.
 D) Each spermatid forms two sperm

Answer 25

D) Each spermatid forms two sperm

Question 26

A low secretion of luteinizing hormone (LH) in the normal male adult would cause ________.
 A) decreased testosterone secretion
 B) excessive beard growth
 C) increased spermatogenesis
 D) shrinkage of the anterior pituitary gland

Answer 26

A) decreased testosterone secretion


Question 27

Which is the most correct sequence of sperm flow in the male duct system? A) Seminiferous tubules; prostatic urethra; vas deferens; ejaculatory duct; ampulla B) Testes; epididymis; ductus deferens; urethra; seminal vesicle C) Testes; ductus deferens; urethra; seminal vesicle D) Seminiferous tubules; epididymis; vas deferens; ampulla; ejaculatory duct; urethra E) Seminiferous tubules; vas deferens; ejaculatory duct; ampulla; urethra

Answer 27

D) Seminiferous tubules; epididymis; vas deferens; ampulla; ejaculatory duct; urethra

Question 28

``` Which represents a correct cascade of reproductive hormones in males? A) GnRH; LH/FSH; testosterone + inhibin B) FSH; GnRH; LH; testosterone C) FSH; GnRH; testosterone; LH D) FSH; LH; GnRH; testosterone E) LH; GnRH; FSH; testosterone ```

Answer 28

A) GnRH; LH/FSH; testosterone + inhibin

Question 29

``` Within the ovary, progesterone is produced by the A) corpus luteum. B) tertiary follicles. C) primary follicles. D) corpus albicans. E) secondary follicles. ```

Answer 29

A) corpus luteum.

Question 30

``` Sperm are produced in the A) seminal vesicles. B) seminiferous tubules. C) epididymis. D) spermatic cord. E) interstitial cells. F) prostate. ```

Answer 30

B) seminiferous tubules.

Question 31

``` During which of the following phases is the corpus luteum formed? A) Proliferative B) Follicular C) Ovulation D) Secretory ```

Answer 31

D) Secretory

Question 32

``` The __________ follicle is the mature ovarian follicle. A) secondary B) primary C) vesicular D) primordial ```

Answer 32

C) vesicular