c21.pdf

Chapter 21: Reproductive Systems Thibodeau & Patton: Structure & Function of the Body, 15th Edition MULTIPLE 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 Harryson 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