Exam (elaborations)
Chapter 21 Reproductive Systems
Chapter 21 Reproductive Systems
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Chapter 21: Reproductive SystemsMULTIPLE CHOICE
1. The essential organ(s) of the male reproductive system is (are) the
a. spermatozoa
b. testes
c. penis
d. scrotum
ANS: B DIF: Memorization REF: p. 460
OBJ: 1 TOP: Male reproductive system
2. The location of the testes allows them to
a. be maintained at a temperature about 1° C (3° F) below normal body temperature
b. be insured of an adequate blood supply
c. be maintained at a temperature about 1° C (3° F) above normal body temperature
d. both b and c above
ANS: A DIF: Memorization REF: p. 461
OBJ: 1 TOP: Testes
3. The tough, whitish membrane surrounding the testes is called the
a. seminiferous tubules
b. interstitial cells
c. tunica albuginea
d. scrotum
ANS: C DIF: Memorization REF: p. 461
OBJ: 1 TOP: Testes
4. Sperm cells develop in the
a. interstitial cells
b. tunic albuginea
c. prostate gland
d. seminiferous tubules
ANS: D DIF: Memorization REF: p. 462
OBJ: 1 TOP: Testes
5. The primary spermatocyte
a. produces spermatogonium
b. contains 46 chromosomes
c. contains 23 chromosomes
d. both a and b above
ANS: B DIF: Application REF: p. 462 OBJ: 2
TOP: Testes
6. The spermatids
a. are direct daughter cells of the spermatogonium
b. are direct daughter cells of the secondary spermatocytes
, c. contain 23 chromosomes
d. both b and c above
ANS: D DIF: Application REF: p. 462 OBJ: 2
TOP: Testes
7. The acrosome of the sperm cell
a. contains enzymes that help break down the covering of the ovum
b. contains mitochondria
c. produces ATP for sperm cell mobility
d. is a whiplike structure that provides movement for the sperm
ANS: A DIF: Memorization REF: p. 463
OBJ: 2 TOP: Testes
8. The midpiece of the sperm
a. supplies enzymes to break down the covering of the ovum
b. contains mitochondria
c. holds 23 chromosomes
d. is a whiplike structure that provides movement for the sperm
ANS: B DIF: Memorization REF: p. 463
OBJ: 2 TOP: Testes
9. Which of the following is not a function of testosterone?
a. It is the masculinizing hormone.
b. It causes spermatogonia to undergo a unique kind of cell division at puberty.
c. It has a stimulating effect on protein synthesis.
d. It promotes and maintains the development of the male accessory organs.
ANS: B DIF: Memorization REF: p. 463
OBJ: 3 TOP: Testes
10. The tube that leaves the scrotal sac and enters the abdominal cavity is the
a. epididymis
b. ductus deferens
c. ejaculatory duct
d. urethra
ANS: B DIF: Memorization REF: p. 465
OBJ: 1 TOP: Male reproductive system—Reproductive ducts
11. The tightly coiled tube that lies along the top and sides of the testes is the
a. epididymis
b. ductus deferens
c. ejaculatory duct
d. urethra
ANS: A DIF: Memorization REF: p. 465
OBJ: 1 TOP: Male reproductive system—Reproductive ducts
12. The tube that carries sperm out of the body and is also part of the urinary system is the
a. epididymis
, b. ductus deferens
c. ejaculatory duct
d. urethra
ANS: D DIF: Memorization REF: p. 465
OBJ: 1 TOP: Male reproductive system—Reproductive ducts
13. Seminal fluid
a. contains about 100,000 sperm per milliliter
b. is produced primarily by the seminiferous tubule
c. is slightly alkaline
d. both a and c above
ANS: C DIF: Memorization REF: p. 465
OBJ: 2 TOP: Male reproductive system—Accessory, or supportive, sex glands
14. The structure that produces a thin, milk-colored fluid that composes about 30% of the seminal
fluid volume is the
a. seminal vesicles
b. prostate gland
c. bulbourethral glands
d. seminiferous tubules
ANS: B DIF: Memorization REF: p. 465
OBJ: 1 TOP: Male reproductive system—Accessory, or supportive, sex glands
15. The structure that produces a thick, yellowish fluid that contains fructose and composes about
60% of the seminal fluid volume is the
a. seminal vesicles
b. prostate gland
c. bulbourethral glands
d. seminiferous tubules
ANS: A DIF: Memorization REF: p. 465
OBJ: 1 TOP: Male reproductive system—Accessory, or supportive, sex glands
16. The scrotum contains which of the following structures?
a. Testes
b. Prostate gland
c. Epididymis
d. Both a and c above
ANS: D DIF: Memorization REF: pp. 4601-461
OBJ: 4 TOP: Male reproductive system—External genitals
17. The essential organ of the female reproductive system is the
a. uterus
b. ova
c. ovary
d. vagina
ANS: C DIF: Memorization REF: pp. 466-467
OBJ: 1 TOP: Female reproductive system
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