During spermatogenesis, the first meiotic division yields two ____, and the second meiotic division yields four ____.
a. primary spermatocytes, secondary spermatocytes
b. secondary spermatocytes, spermatids
c. spermatids, spermatozoa
d. spermatogonia, primary spermatocytes
e. none of these answers.
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Question 2) LH stimulates which cells to synthesize androgens?
a. sperm
b. spermatogonia
c. theca
d. granulosa
e. Sertoli
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Question 3) GnRH
a. stimulates both FSH and LH secretion.
b. is inhibited by testosterone.
c. has low-level activity during the prepubertal period.
d. both stimulates both FSH and LH secretion and is inhibited by testosterone.
e. all of these answers.
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Question 4) Which of the following is not a function of the Sertoli cells?
a. secreting seminiferous tubule fluid
b. phagocytizing cytoplasm extruded from developing sperm and destroy defective sperm
c. secreting testosterone
d. secreting inhibin
e. providing nourishment for developing sperm
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Question 5) The acrosome of the spermatozoon
a. contains the sperm's genetic information.
b. contains mitochondria for energy production.
c. is a fructose-filled vesicle that provides energy for the spermatozoa.
d. contains enzymes that enable the sperm to penetrate the ovum.
e. contains microtubules that slide past each other to provide the sperm with motility.
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Question 6) During spermatogenesis
a. FSH is required for spermatid remodeling.
b. spermatogonia divide by mitosis
c. testosterone is essential for both mitosis and meiosis of the germ cells.
d. both (a) and (c) above.
e. all of the above
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Question 7) Which female structure has a similar tissue composition as the penis.
a. cervical canal.
b. clitoris.
c. fallopian tube.
d. labia majora.
e. myometrium.
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Question 8) During spermatogenesis, one spermatogonium containing
a. 46 chromosomes yields 16 spermatozoa, each containing 23 chromosomes.
b. 46 chromosomes yields 1 spermatozoon containing 23 chromosomes and a polar body containing the other 23 chromosomes.
c. 46 chromosomes yields 2 spermatozoa, each containing 23 chromosomes.
d. 46 chromosomes yields 1 spermatozoon containing 46 chromosomes.
e. 23 chromosomes yields 1 spermatozoon containing 23 chromosomes.
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Question 9) A secondary spermatocyte
a. is haploid with unduplicated chromosomes.
b. is haploid with duplicated chromosomes.
c. is diploid with unduplicated chromosomes.
d. is diploid with duplicated chromosomes.
e. none of these answers.
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Question 10) Spermatogenesis is directly controlled by
a. LH.
b. FSH.
c. prostaglandins.
d. both FSH and prostaglandins.
e. all of these answers.
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