Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN: 9781305389892
Author: Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher: Cengage Learning
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Chapter 42, Problem 9TYK
Summary Introduction
Introduction:
The androgens are a group of hormones that influence the growth and development of male sex characteristics. The androgens are mistakenly thought of as only the male sex hormones, but they are also secreted in the females. A very few amounts of androgen are secreted by the adrenal glands and ovaries in the female body.
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A striking effect of hormonal changes on human sexualbehavior is thea. end of sexual desire in men over 60.b. sharp rise in sexual interest at puberty.c. decrease in women’s sexual desire at the time ofovulation.d. increase in testosterone levels in castrated males.
Sertoli cells produce androgen binding protein. The purpose of this androgen binding protein is to :
(select one)
a. Transport testosterone to the developing germ cells
b. Increase the clearance rate of testosterone
c. Prevent the germs cells being exposed to toxic concentrations of testosterone
d. Manufacture androgens
e. Transport testosterone to the capillaries
How will you explain the role of Gonadotropin Releasing Hormone (GnRH)? The GnRH is a/an:
follicle stimulator that will mature the egg cell.
testes stimulator that will synthesize testosterone.
С.
8.
A.
B.
pituitary Gland stimulator that will produce FSH and LH.
D.
ovary stimulator that will produce sex steroid hormones.
Which of these roles of hormones explains the changes in the physical appearance of the extemal
genitalia of the male and female reproductive part at the onset of puberty?
9.
А.
Stimulation of follicle alone.
В.
Production of sperm and egg cell.
С.
Regulation of the production of GNRH
D.
Development of male and female characteristics.
Which of the following hormone pairing will best explain why men and women have unique physical
structures?
10.
А.
(Testosterone, Estrogen)
C. (Progesterone, Adrenaline)
В.
(Progesterone, Estrogen)
D.
(Testosterone, Progesterone)
What type of feedback mechanism is described when progesterone and estrogen levels drop after
menstruation,…
Chapter 42 Solutions
Biology: The Dynamic Science (MindTap Course List)
Ch. 42.1 - What is the difference between a hormone and an...Ch. 42.1 - How is endocrine signaling different from...Ch. 42.2 - Prob. 1SBCh. 42.2 - Prob. 2SBCh. 42.3 - Prob. 1SBCh. 42.3 - Prob. 2SBCh. 42.4 - What effect does parathyroid hormone have on the...Ch. 42.4 - Prob. 2SBCh. 42.4 - Prob. 3SBCh. 42.4 - Prob. 4SB
Ch. 42.5 - How do hormones compare structurally and...Ch. 42 - Prob. 1TYKCh. 42 - Prob. 2TYKCh. 42 - When the concentration of thyroid hormone in the...Ch. 42 - Which of the following statements about endocrine...Ch. 42 - Prob. 5TYKCh. 42 - Prob. 6TYKCh. 42 - If the human body is stressed, glucocorticoids: a....Ch. 42 - Prob. 8TYKCh. 42 - Prob. 9TYKCh. 42 - Prob. 10TYKCh. 42 - Prob. 11TYKCh. 42 - Prob. 12TYKCh. 42 - Discuss Concepts In integrated pest management, a...Ch. 42 - Prob. 14TYKCh. 42 - Prob. 15TYKCh. 42 - Prob. 1ITDCh. 42 - Prob. 2ITDCh. 42 - Prob. 3ITDCh. 42 - Researchers measured prolactin and growth hormone...
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- Plasma concentrations of LH and FSH rise dramatically after menopause. This is because (select one) a. The negative feedback of gonadal steroids is no longer present b. Rising gonadotrophins maintains the fertility of older animals c. Fertility in older woman declines d. The pituitary becomes more efficient with agearrow_forwardWhich 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.arrow_forwardHuman chorionic gonadotropin (hCG) hormone is produced by a fertilized egg in order to maintain elevated levels of estrogen and progesterone. hCG is also used to induce ovulation during IVF procedures and is known to stimulate the production of testosterone in the testes. Which of the following hormones has similar functions as hCG? Select one: a. FSH b. Inhibin c. LH d. Estrogenarrow_forward
- Around day 21 of the 28-day cycle, administration of estrogen and progestin stopped for 7 days. A low level of progesterone results in. Select one: A. menstruation, as the endometrium is built up and maintained by progesterone. B. increased level of estrogen released by the corpus luteum / C. suppression of GnRH in the hypothalamus and FSH and LH in the anterior pituitary. D. increased levels of FSH and LH, resulting in a mature follicle.arrow_forwardwhich 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 spermarrow_forwardIf the number of Sertoli cells decreased in a male’s testes, which of the following effects would occur? Select one: a. The hypothalamus would enter hyperactivity, and GnRH levels would increase. b. The testes would decrease in size, and LH levels would decrease. c. The man’s sperm count would decrease, and FSH levels would increase. d. Body changes for puberty would be delayed, and testosterone would decrease.arrow_forward
- In a female, follicle-stimulating hormone (FSH) and luteinizing hormone (LH) target the:a. uterus. c. ovaries.b. anterior pituitary gland. d. hypothalamus.arrow_forwardWhich of the following statements about hormone regulation of the female reproductive cycle is false? a. LH and FSH are produced in the pituitary, and estradiol 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 estradiol are produced by the follicles. d. Secretion of GnRH by the hypothalamus is inhibited by low levels of estradiol but stimulated by high levels of estradiol.arrow_forwardWhich 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 hormonesarrow_forward
- Which of the following statements does NOT correctly describe a difference between the male and female reproductive systems? Select one: a. Testosterone has a major role in the development of secondary sexual characteristics in male reproductive systems, whereas LH promotes the development of secondary sexual characteristics in females. b. The male reproductive system mass produces large quantities of gametes each day, whereas the female reproductive system produces an average of a single gamete each month. c. The excretory and reproductive systems both use the urethra in males, whereas in females, there are separate tubes for the excretory and reproductive systems. d. The structures that produce gametes are exterior to the body in the male reproductive system, whereas the gametes are produced inside the body for females.arrow_forwardMatch the hormones to the organ that makes them or to the action they cause. Use letters more than once. A. estrogen B. follicle stimulating hormone (FSH) C. human chorionic gonadotropin (HCG) D. luteinizing hormone (LH) E. progesterone F. testosterone v blastula v corpus luteum Leydig's cells A. A ovary v 1st hormone of pituitary gland to start cycle В. В С.С 2nd hormone of pituitary gland halfway through cycle D. D vendometrium grows more blood vessels Е. E v keeps corpus luteum v stimulates sperm production, muscle growth, aggression F. F v keeps endometrium in uterus ovulation (egg leaves ovary) v tells egg to developarrow_forwardWhich of the following hormones in pregnancy is INCORRECTLY matched with its description? a. Estrogen - promotes growth of the uterus b. Insulin - target cells are slightly less responsive c. GnRH - is at low levels due to negative feedback from estrogen & progesterone d. hCG - promotes cell division within the growing embryo e. Progesterone - prohibits uterine contractionsarrow_forward
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