The steroid hormone estradiol has a negative feedback effect on LH and FSH secretion. However, it switches to a positive feedback around the time of ovulation. At which concentrations compared to the early follicular phase concentrations does this happen? Select one: a. 25% b. 50% c.100% d.150% e.200%

The steroid hormone estradiol has a negative feedback effect on LH and FSH secretion. However, it switches to a positive feedback around the time of ovulation. At which concentrations compared to the early follicular phase concentrations does this happen? Select one: a. 25% b. 50% c.100% d.150% e.200%

Nutrition Through The Life Cycle

7th Edition

ISBN:9781337919333

Author:Brown, Judith E.

Publisher:Brown, Judith E.

Chapter3: Preconception Nutrition- Conditions And Interventions

Section: Chapter Questions

Problem 6RQ

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Figure 18.12 Which of the following statements about the male reproductive system is false? a. The vas deferens carries sperm from the testes to the seminal vesicles. b. The ejaculatory duct joins the urethra. c. Both the prostate and the bulbourethral glands produce components of the semen. d. The prostate gland is located in the testes.
A human blastocyst normally implants in ................. a. an oviduct c. the uterus b. a seminiferous tubule d. the vagina
What is a potential consequence of embryonic exposure to endocrine-disrupting compounds that can bind to estrogen receptors? Select one: a. Increased growth rate and early birth b. Decrease in size of developing testes c. Increased rate of ovulation d. Decreased sperm count e. Choices B and D are correct
Which of the following statement does NOT describe the role of luteinizing hormones (LH) in the female reproductive system? Select one: A. Causes the release of mature ovum from the ovary B. Suppress the production of estrogen C. Stimulate the production of progesterone D. Stimulate the development of the corpus luteum
Which of the following statements correctly describes the function of the Sertoli cells? a. Stimulate spermatogenesis b. Support the developing sperm cells c. Control the overproduction of testosterone d. Store testosterone in the testes
What effect would a continuous supply of exogenous estrogen or progesterone have on an adult female human? Will it: A) Cause no oocyte maturation B) Have more frequent ovulation C) Contain a stronger surge in LH production at mid-cycle D) Ovulation of multiple oocytes per cycle E) High, steady FSH production
which of the following statement is NOT about follicle-stimulating hormones (FSH) in the male reproductive system? Select one: A. It is stimulated by GnRH and LH. B. It increases the production of inhibin. C. It is suppressed by increased levels of Testerone snd inhibin. D. It stimulates the Sertoli cells to produce sperm
Peaks of LH and FSH production occur during (A) the menstrual flow phase of the uterine cycle. (B) the beginning of the follicular phase of the ovarian cycle. (C) the period just before ovulation. (D) the secretory phase of the uterine cycle.
In positive mechanism, which of the following will happen if there is an increase production of estrogen in day 12 to 14 of the menstrual cycle? a/The level of released hormones cannot be determined b.There is a decrease release of estrogen in the ovaries c.There is an increase release of estrogen in the ovaries d.There is constant level of estrogen in the ovarie
Which of the following processes takes place simultaneously during the menstrual cycle? a) High LH levels and ovulation b) Reconstruction of the corpus luteum and increased release of progesterone from the ovaries c) Maximum LH release and menstruation (bleeding) d) Early follicular development and uterine lining e) Ovulation and menstruation
Which of the following statements is NOT a role of follicle stimulating hormone (FSH) in the male reproductive system? a. It is suppressed by increased levels of testosterone and inhibin. b. It stimulates the Sertoli cells to produce sperm. c. It increases the production of inhibin. d. It stimulates a primary follicle to develop.
Which of the following situation leads to decreased fertility? Select one: A. Hepatitis B Infection B. Regular monthly menstrual cycles C. Exercising regularly and eating healthy D.Normal sperm count