From what I understand, menopause occurs after depletion and atresia of ovarian follicles. So, would something that depletes follicles at a faster rate than normal, such as fertility treatments, lead to early menopause?
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From what I understand, menopause occurs after depletion and atresia of ovarian follicles. So, would something that depletes follicles at a faster rate than normal, such as fertility treatments, lead to early menopause?
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- Figure 43.15 Which of the following statements about hormone regulation of the female reproductive cycle is false? LH and FSH are produced in the pituitary, and estradiol and progesterone are produced in the ovaries. Estradiol and progesterone secreted from the corpus luteum cause the endometrium to thicken. Both progesterone and estradiol are produced by the follicles. Secretion of GnRH by the hypothalamus is inhibited by low levels of estradiol but stimulated by high levels of estradiol.Which of the following is NOT TRUE? A) Menopause is marked by elevated levels of gonadotropins. A spermatozoon can survive for more than five days in a female reproductive tract. C) The proliferative endometrial phase is promoted by progesterone. Synthetic estrogens act as contraceptives by preventing the ovarian luteal phase. The hormonal basis of stress-induced amenorrhea is due to the influence of the limbic system on GNRH secretion.Which of the following statements accurately describes the pathogenesis of polycystic ovarian syndrome? Question 28 options: a) Excessive androgens that affect follicular decline by suppressing apoptosis, enabling follicles, which normally disintegrate to survive b) A decrease in leptin levels that reduces the hypothalamic pulsatility of GnRH, which reduces the number of follicles that mature c) A disorder of the anterior pituitary that increases the release of FSH, which reduces the release of LH d) Testosterone that stimulates androgen secretion by the ovarian stroma and reduces SHBG indirectly
- Select the FALSE statement/s: A) The functional layer of the endometrium sloughs off when estrogen levels are at their lowest but progesterone levels at their highest. 1 OB) Every month, the 20 secondary follicles release 20 ova. OC) XX genotypic female exposed to high levels of androgen in utero will develop male-like exfernal genitalia OD) Both A and B OE) Both B and CClomiphene Citrate is a fertility drug that stimulates hypothalamic secretion of Gonadotropin releasing Hormone (GnRH) in females and induces ovulation. Explain how increased GnRH with Clomiphene Citrate treatment would affect follicle maturation and ovulation in women (explain how increased GnRH would affect FSH, LH, Estrogen, and ovulation).If the ovum is not fertilized, the corpus luteum regresses, and the endometrium sloughs off to result in the first day of menstrual bleeding. The latter event would be duplicated, even if fertilization occurred, if receptors for which of the following hormones were occupied by an antagonist? A) Dehydroepiandrosterone B) Estradiol C ) Estriol D) Estrone E) Progesterone
- During the follocular phase of the ovarian cycle, what does an increase in estrogen concentrations correlate with? 1-The degradation of a follicle containing an egg(oocyte) 2-The formation of the corpus luteum 3-The maturation of a follicle containing an egg(oocyte) 4- The degradation of teh corpus luteumWhat could be the reason why a woman only gets her period after puberty begins? A) Before puberty, high quantities of of corpus luteum are present B) Before puberty, GnRH levels may be too low. C) Before puberty, their endometrial lining is too thick.List three different menopausal symptoms that can be counteracted by HRT (hormone replacement therapy). What is the reason why both estrogen and progestin are often included in these preparations?
- Although the most effective forms of oral contraceptive for women contain estrogen and progestin, some birth control pills contain a small dose of progestin only. This is because there are many risks and side effects associated with estrogen.Which of the following statements is NOT a reason for using a progestin-only oral contraceptive? Select one: a. Progesterone suppresses the maturation of follicles, thereby preventing ovulation of a mature ovum. b. Progesterone maintains the corpus luteum as corpus luteum releases a large amount of progesterone and some estrogen. c. Progestin-only oral contraceptives prevent the production of FSH and LH in the anterior pituitary. d. Progesterone suppresses the production of GnRH in the hypothalamus.Which of the following statements correctly describes the development of the endometrium during the menstrual cycle? Select one: A. Estrogen causes accelerated development of the endometrium during the follicle stage and then maintains the thickness of the endometrium during the luteal stage. B. Progesterone causes the relatively slow development of the endometrium during the follicle stage and accelerates the thickening of the endometrium during the luteal stage. C. Estrogen causes the relatively fast thickening of the endometrium during the follicular stage. Progesterone maintains the thickness of the endometrium during the luteal phase. D. Estrogen causes the relatively slow development of the endometrium during the follicular stage. Progesterone causes accelerated thickening of the endometrium during the luteal phase.At the end of the uterine cycle, there is a significant drop in the levels of LH, estrogen, and progesterone.This causes all of the following EXCEPT Select one: a. an increase in smooth muscle contractions of the uterus b. the start of menstruation, which breaks down the blood vessels and tissues formed during the follicular stage c. the maintenance of the corpus luteum to continue producing low levels of progesterone and estrogen d. a negative feedback loop to the pituitary to secrete more FSH and LH
