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- Sperm are produced in the _______. a. scrotum b. seminal vesicles c. seminiferous tubules d. prostate glandIn the fertility awareness method of birth control, a woman gauges her monthly fertile period by monitoring changes in the consistency of her vaginal mucus. What kind of information does such a method provide about the likelihood of getting pregnant?List four events that are triggered by the surge of LH at the midpoint of the menstrual cycle.
- Outline the roles of follicle-stimulating hormone (FSH) and luteinizing hormone (LH) in the ovarian cycle of a human female.Figure 18.17 Which of the following statements about hormone regulation of the female reproductive cycle is false? a. LH and FSH are produced in the pituitary, and estrogen and progesterone are produced in the ovaries. b. Estradiol and progesterone secreted from the corpus luteum cause the endometrium to thicken. c. Both progesterone and estrogen are produced by the follicles. d. Secretion of GnRH by the hypothalamus is inhibited by low levels of estrogen but stimulated by high levels of estrogen.Figure 43.17 Which of the following statements about the menstrual cycle is false? Progesterone levels rise during the luteal phase of the ovarian cycle and the secretory phase of the uterine cycle. Menstruation occurs just after LH and FSH levels peak. Menstruation occurs after progesterone levels drop. Estrogen levels rise before ovulation, while progesterone levels rise after.
- Match each term with the most suitable description. ___epididymis a. conveys oocyte to uterus ___vas deferens b. can be inflated by blood ___vagina c. where sperm mature ___seminal vesicle d. target of vasectomy ___penis e. main contribution to semen ___oviduct f. sheds lining monthly ___uterus g. birth canalWhich of the following statements does NOT correctly describe the role of inhibin in the male reproductive system? Select one: a. Increased levels of inhibin suppress the production of follicle stimulating hormone. b. Low levels of inhibin result in decreased production of sperm. c. Sertoli cells produce sperm and secrete inhibin. d. Inhibin decreases the production of sperm.Which of the following statement correctly describe the role of androgen in the male reproductive system? Select one: A. LH stimulates the Sertoli cell to produce inhibin and to start spermatogenesis. B. Increased levels of inhibin released by the interstitial cells result in lower levels of FSH and testosterone. C. Increased levels of testosterone feedbacks negatively to the anterior pituitary and hypothalamus. D. GnRH is released by the anterior pituitary and stimulates the release of FSH and LH.
- Which of the following statements correctly describes the function of the Sertoli cells? Select one: a. Support the developing sperm cells b. Control the overproduction of testosterone c. Stimulate spermatogenesis d. Store testosterone in the testesSelect the most accurate statement regarding male sexual function. A. Damage to the sympathetic nuclei will not impair and have no consequences on male sexual function. B. Onuf’s nuclei hijacks pudendal nerve to temporarily cause it to have parasympathetic function, thereby allowing contractions of bulbospongiosus and ischiocavernosus C. Males can voluntarily stop during the seminal emission and the expulsion phase. D. The spinal ejaculation generator receives afferent stimulation from obturator nerve.Which of the following does NOT correctly describe the role of inhibin in the male reproductive system? Select one: A. Sertoli cells produce sperm and secrete inhibin. B. Low levels of inhibin result in decreased production of sperm. C. Inibin decreases the production of sperm. D. Increased Level of inhibin suppress the production of follicle-stimulating hormones