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Chapter 20. Toxic Responses of the Reproductive System

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Which of the following cell types secretes anti-Müllerian hormone (AMH)?

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a. spermatogonium.

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b. Leydig cell.

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c. Sertoli cell.

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d. primary spermatocyte.

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e. spermatid.

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Penile erections are dependent on:

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a. the CNS.

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b. sympathetic nerve stimulation.

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c. helicine (penile) artery constriction.

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d. corpora cavernosa smooth muscle relaxation.

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e. a spinal reflex arc.

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The corpus luteum is responsible for the secretion of which of the following hormones during the first part of pregnancy?

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a. estradiol and hCG.

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b. progesterone and estradiol.

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c. progesterone and hCG.

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d. FSH and LH.

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e. FSH and progesterone.

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All of the following statements regarding the hypothalamo-pituitary–gonadal axis are true EXCEPT:

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a. FSH increases testosterone production by the Leydig cells.

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b. FSH and LH are synthesized in the anterior pituitary.

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c. Estradiol provides negative feedback on the hypothalamus and the anterior pituitary.

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d. GnRH from the hypothalamus increases FSH and LH release from the anterior pituitary.

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e. The LH spike during the menstrual cycle is responsible for ovulation.

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Which of the following statements is FALSE regarding gametal DNA repair?

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a. DNA repair in spermatogenic cells is dependent on the dose of chemical.

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b. Spermiogenic cells are less able to repair damage from alkylating agents.

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c. Female gametes have base excision repair capacity.

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d. Meiotic maturation of the oocyte decreases its ability to repair DNA damage.

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e. Mature oocytes and mature sperm no longer have the ability to repair DNA damage.

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Reduction division takes place during the transition between which two cell types during spermatogenesis?

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a. spermatogonium and primary spermatocyte.

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b. primary spermatocyte and secondary spermatocyte.

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c. secondary spermatocyte and spermatid.

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d. spermatid and spermatozoon.

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e. spermatozoon and mature sperm.

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