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8 |  |  Which of the following cells are diploid? |
|  | A) | secondary oocytes |
|  | B) | secondary spermatocytes |
|  | C) | primary spermatocytes |
|  | D) | spermatids |
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9 |  |  Final maturation of sperm cells occurs in the |
|  | A) | epididymis |
|  | B) | seminiferous tubules |
|  | C) | prostate gland. |
|  | D) | urethra |
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10 |  |  Seminal vesicles produce |
|  | A) | sperm cells. |
|  | B) | testosterone. |
|  | C) | fructose-rich fluid. |
|  | D) | estrogen. |
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11 |  |  The normal number of spermatozoa per milliliter of semen is |
|  | A) | approximately 500,000 |
|  | B) | fewer than 20,000,000 |
|  | C) | more than 2,000,000,000. |
|  | D) | 75,000,000 to 400,000,000 |
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12 |  |  During spermatogenesis, which of the following undergoes a meiotic division to produce haploid cells? |
|  | A) | spermatids |
|  | B) | secondary spermatocytes |
|  | C) | primary spermatocytes |
|  | D) | spermatogonia |
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13 |  |  The function of the cremaster muscle is to |
|  | A) | elevate the testes during sexual arousal and exposure to cold |
|  | B) | generate peristaltic waves in the ductus deferens |
|  | C) | control the release of secretions from the seminal vesicles |
|  | D) | control the release of sperm cells from the testes into the epididymis |
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14 |  |  The form (stage) of developing male gamete located nearest to the basement membrane of a seminiferous tubule is the |
|  | A) | spermatid |
|  | B) | primary spermatocyte |
|  | C) | secondary spermatocyte |
|  | D) | spermatogonium |
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15 |  |  Leydig cells are located |
|  | A) | in all the male accessory reproductive organs. |
|  | B) | interspersed among developing sperm cells in seminiferous tubules. |
|  | C) | lining the epididymis and ductus deferens. |
|  | D) | in spaces between adjacent seminiferous tubules. |
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16 |  |  The immune system does NOT normally attack spermatogenic cells because |
|  | A) | they are recognized as "self" structures. |
|  | B) | they do not have any antigens on their cell membranes. |
|  | C) | spermatogenic cells are protected by the blood-testis barrier. |
|  | D) | the acrosome covers any antigens that would be recognized as foreign. |
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17 |  |  The process of crossing-over, or recombination, of genes occurs during |
|  | A) | meiosis I. |
|  | B) | meiosis II. |
|  | C) | spermiogenesis. |
|  | D) | spermiation. |
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18 |  |  All of the following are part of the spermatic cord EXCEPT the |
|  | A) | testicular artery. |
|  | B) | lymphatic vessels. |
|  | C) | ductus deferens. |
|  | D) | ejaculatory duct. |
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19 |  |  The function of fructose in semen is to |
|  | A) | provide an energy source for ATP production by sperm. |
|  | B) | promote coagulation of semen in the female reproductive tract. |
|  | C) | buffer acids in the female reproductive tract. |
|  | D) | inhibit the growth of bacteria in semen and the female reproductive tract. |
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20 |  |  The seminal vesicles are located |
|  | A) | inferior to the prostate within the urogenital diaphragm. |
|  | B) | within the lobules of the testes. |
|  | C) | within the spermatic cord. |
|  | D) | posterior and inferior to the urinary bladder, in front of the rectum. |
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21 |  |  Which of the following does NOT manufacture products that become part of semen? |
|  | A) | seminiferous tubules |
|  | B) | bulbourethral glands |
|  | C) | penis |
|  | D) | seminal vesicles |
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22 |  |  The amount of testosterone in the blood is increased by |
|  | A) | a high level of testosterone stimulating the hypothalamus. |
|  | B) | the hypothalamus stimulating the testes to release LH. |
|  | C) | LH causing the interstitial cells to release testosterone. |
|  | D) | a high level of testosterone stimulating the testes to release more LH. |
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23 |  |  If the testes fail to descend, a male is infertile because sperm cell formation is prevented by |
|  | A) | relatively high internal body temperature. |
|  | B) | excessive production of estrogen. |
|  | C) | lack of testosterone. |
|  | D) | None of the above. |
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24 |  |  The hormone responsible for the development and maintenance of male secondary sexual characteristics is |
|  | A) | ICSH. |
|  | B) | FSH. |
|  | C) | testosterone. |
|  | D) | gonadotropin-releasing hormone. |
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25 |  |  Male reproductive functions are controlled mainly by hormones from the hypothalamus, |
|  | A) | posterior pituitary and adrenal glands. |
|  | B) | anterior pituitary and adrenal glands. |
|  | C) | posterior pituitary gland and testes. |
|  | D) | anterior pituitary gland and testes. |
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26 |  |  The last fluid to be expelled from the urethra during ejaculation comes from the |
|  | A) | testes. |
|  | B) | bulbourethral gland. |
|  | C) | prostate gland. |
|  | D) | seminal vesicles. |
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27 |  |  The interstitial cells of the testes produce |
|  | A) | seminal fluid |
|  | B) | egg cells |
|  | C) | sperm cells |
|  | D) | androgens |
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28 |  |  Testosterone is produced by |
|  | A) | spermatozoa. |
|  | B) | sustentacular cells. |
|  | C) | interstitial cells |
|  | D) | the hypothalamus. |
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29 |  |  Maintenance of the male secondary sex characteristics is the direct responsibility of |
|  | A) | estrogen. |
|  | B) | testosterone. |
|  | C) | FSH. |
|  | D) | progesterone. |
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30 |  |  A function of FSH in the male is to |
|  | A) | inhibit progesterone. |
|  | B) | initiate testosterone production. |
|  | C) | increase protein synthesis. |
|  | D) | initiate spermatogenesis. |
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31 |  |  In the male, LH causes |
|  | A) | initiation of spermatogenesis. |
|  | B) | development of secondary sex characteristics. |
|  | C) | testosterone production. |
|  | D) | ejaculation. |
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32 |  |  The principal androgen is |
|  | A) | ABP. |
|  | B) | FSH. |
|  | C) | testosterone. |
|  | D) | HCG. |
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33 |  |  Egg cells are transported in the female reproductive tract by the ____, whereas sperm are transported in the male reproductive tract by the _____. |
|  | A) | action of ciliated epithelium in the uterine tubes; movements of their tails |
|  | B) | activity of seminal vesicle secretion; activity of prostate gland secretions |
|  | C) | peristaltic contractions of the vaginal wall; peristaltic contractions of the uterus |
|  | D) | movement of their tails; lashing movements of their tails |
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34 |  |  The first step in oogenesis is a |
|  | A) | secondary oocyte divides to form a polar body and an egg cell. |
|  | B) | primary oocyte divides to form a secondary oocyte and a first polar body. |
|  | C) | follicle is converted to a corpus luteum. |
|  | D) | corpus luteum is converted to a corpus albicans. |
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