Which of these statements is true?
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EBK HUMAN PHYSIOLOGY
- In 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?arrow_forwardSperm are produced in the _______. a. scrotum b. seminal vesicles c. seminiferous tubules d. prostate glandarrow_forwardSpermatogonia divide by mitosis to form a new spermatogonium and a. a sperm. b. spermatids. c. a primary spermatocyte. d. zygotes.arrow_forward
- Identify the structure that supports the development of sperm cells. Select one: a. D, which is the Sertoli cell b. A, which is the spermatocyte c. C, which is the sperm cell d. B, which is the interstitial cellarrow_forwardWhich of the following statements does NOT describe the events that occur if the ovum is not fertilized? Select one: a. The corpus luteum degenerates and stops producing estrogen and progesterone. b. GnRH, FSH, and LH levels begin to increase. c. Progesterone maintains the endometrium for the zygote. d. Low levels of progesterone result in menstruation.arrow_forwardWhich of the following statements about the menstrual cycle is false? a. Progesterone levels rise during the luteal phase of the ovarian cycle and the secretory phase of the uterine cycle. b. Menstruation occurs just after LH and FSH levels peak. c. Menstruation occurs after progesterone levels drop. d. Estrogen levels rise before ovulation, while progesterone levels rise after.arrow_forward
- Which of the following statements about the male reproductive system is false? a. The vas deferens carries sperm from the testes to the penis. b. Sperm mature in seminiferous tubules in the testes. c. Both the prostate and the bulbourethral glands produce components of the semen. d. The prostate gland is located in the testes.arrow_forwardWhat important change happens to sperm in the female reproductive tract? (select one) a. Capacitation which increases sperm motility b. The activation of the microtubule motors in the sperm tail c. The outer dense fibres become less rigid d. The sperm head decondenses releasing the DNAarrow_forwardWhich of the following is not an event of the ovarian cycle?a. FSH promotes the development of a follicle.b. The endometrium thickens.c. The corpus luteum secretes progesterone.d. Ovulation of an egg occurs.arrow_forward
- Which of the following is not a mechanism on how contraceptive pills work to prevent pregnancy? A. thinning the endometrium to prevent implantation B. inhibition of follicular development and suppression of ovulation C. progesterone inhibits the sperm from penetrating through the cervix and female upper tract by making the cervical mucus unfriendly D. stimulates the production of high testosterone levelsarrow_forwardOogenesis involves germ cells in the ovary undergoing meiosis to produce a functional ovum at the end of the process.Which of the following cells is penetrated by a sperm cell during the process of fertilization? Select one: a. Secondary oocyte b. Oogonia c. Primary oocyte d. Ovumarrow_forwardWhich 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 testesarrow_forward
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