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Chapter 20. Toxic Responses of the Reproductive System

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

a. spermatogonium.

b. Leydig cell.

c. Sertoli cell.

d. primary spermatocyte.

e. spermatid.

Penile erections are dependent on:

a. the CNS.

b. sympathetic nerve stimulation.

c. helicine (penile) artery constriction.

d. corpora cavernosa smooth muscle relaxation.

e. a spinal reflex arc.

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

a. estradiol and hCG.

b. progesterone and estradiol.

c. progesterone and hCG.

d. FSH and LH.

e. FSH and progesterone.

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

a. FSH increases testosterone production by the Leydig cells.

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

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

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

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

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

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

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

c. Female gametes have base excision repair capacity.

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

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

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

a. spermatogonium and primary spermatocyte.

b. primary spermatocyte and secondary spermatocyte.

c. secondary spermatocyte and spermatid.

d. spermatid and spermatozoon.

e. spermatozoon and mature sperm.


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