Human Physiology: An Integrated Approach (8th Edition)
8th Edition
ISBN: 9780134605197
Author: Dee Unglaub Silverthorn
Publisher: PEARSON
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Textbook Question
Chapter 7, Problem 29RQ
Some early experiments for male birth control pills used drugs that suppressed gonadotropin (FSH and LH) release. However, men given these drugs stopped taking them because the drugs decreased testosterone secretion, which decreased the men’s sex drive and caused impotence.
- a. Use the information given in Figure 7.9 to draw the GnRHFSH/LH-testosterone reflex pathway. Use the pathway to show how suppressing gonadotropins decreases sperm production and testosterone secretion.
- b. Researchers subsequently suggested that a better treatment would be to give men extra testosterone. Draw another copy of the reflex pathway to show how testosterone could suppress sperm production without the side effect of impotence.
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Chronic sleep deprivation inhibited hypothalamic secretion of gonadotropin releasing hormone (GnRH) in male rats. If these finding are extrapolated to humans, explain how decreased GnRH with sleep deprivation would affect gonadotropins and sperm development in men (explain how decreased GnRH with sleep deprivation would affect Follicular stimulating Hormone (FSH), Luteinizing hormone, testosterone, and sperm development).
Birth control pills are oral contraceptives taken by women to prevent pregnancies. The most effective forms of birth control pills contain estrogen and a small amount of progestin (a synthetic hormone that mimics the effects of progesterone).
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a. negatively feedback to the anterior pituitary to suppress the production of GnRH
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c. suppress the shedding of endometrium, thus preventing menstruation
d. prevent a rise in the FSH and LH levels, thereby preventing follicle maturation
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?
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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
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Chapter 7 Solutions
Human Physiology: An Integrated Approach (8th Edition)
Ch. 7.1 - Name the membrane transport process by which...Ch. 7.1 - What is the suffix in a chemical name that tells...Ch. 7.2 - What is the classic definition of a hormone?Ch. 7.2 - Based on what you know about the organelles...Ch. 7.2 - Prob. 5CCCh. 7.2 - The steroid hormone aldosterone has a short...Ch. 7.3 - In the blood glucose example, the increase in...Ch. 7.3 - Which insulin release pathway in Figure 7.7b is a...Ch. 7.3 - Prob. 9CCCh. 7.3 - Catecholamines belong to which chemical class of...
Ch. 7.3 - What intracellular structure is used for transport...Ch. 7.3 - Prob. 12CCCh. 7.3 - Match the general reflex pathway patterns shown in...Ch. 7.3 - Prob. 14CCCh. 7 - The study of hormones is called _____.Ch. 7 - List the three basic ways hormones act on their...Ch. 7 - List five endocrine glands, and name one hormone...Ch. 7 - Match the following researchers with their...Ch. 7 - Put the following steps for identifying an...Ch. 7 - Prob. 6RQCh. 7 - Prob. 7RQCh. 7 - Prob. 8RQCh. 7 - Prob. 9RQCh. 7 - Prob. 10RQCh. 7 - Prob. 11RQCh. 7 - Why do steroid hormones usually take so much...Ch. 7 - Prob. 13RQCh. 7 - Prob. 14RQCh. 7 - Prob. 15RQCh. 7 - Prob. 16RQCh. 7 - In reflex control pathways involving trophic...Ch. 7 - What characteristic defines neurohormones?Ch. 7 - Prob. 19RQCh. 7 - Prob. 20RQCh. 7 - Prob. 21RQCh. 7 - Prob. 22RQCh. 7 - Prob. 23RQCh. 7 - Prob. 24RQCh. 7 - Compare and contrast the three chemical classes of...Ch. 7 - Map the following groups of terms. Add terms if...Ch. 7 - The terms specificity, receptors, and...Ch. 7 - Prob. 28RQCh. 7 - Some early experiments for male birth control...Ch. 7 - Prob. 30RQCh. 7 - The following graph shows plasma TSH concentration...Ch. 7 - Prob. 32RQ
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- 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_forwardWomen with inadequate secretion of GnRH are often treated for their infertility with drugs that mimic the action of this hormone. Can you suggest a possible reason that such treatment is often associated with multiple births?arrow_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_forward
- During the first few weeks of pregnancy, chorionic gonadotropin substitutes for luteinizing hormone to maintain the high progesterone levels needed to support fetal development. What is the property of hCG that allows it to perform this function? A. Secretion by the placental trophoblastic cells B. Lack of regulation by progesterone negative feedback C. Up regulation by positive feedback from FSH D. Sharing a common subunit with anti-Müllerian hormone E. Lack of regulation by inhibinarrow_forwardUsing the following hormone choices, which of the following puts the hormones of the female menstrual cycle in the correct order starting from day 1 and assuming a pregnancy has happend. A. estrogen B. follicle stimulating hormone (FSH) C. human chorionic gonadotropin (HCG) D. luteinizing hormone (LH). E. progesterone F. testosterone ОА. В, Е, С, А, D ОВ.А, D, B, С, Е ОСВ, А, D, E, С O D. D, B, A, E, Carrow_forwardWhich of the following statements correctly describes the effects of increased testosterone? a. Increased levels of testosterone result in increased sperm production b. Increased levels of testosterone decreases the release of FSH and LH c. Increased levels of testosterone stimulates the release of GnRH d. Increased levels of testosterone stimulates the release of FSH and LH.arrow_forward
- Which of the following statement does NOT describe the role of progesterone in the female reproductive system? Select one: A. Prevent the shedding of the endometrium B. Ensures that the endometrium is thick enough to support a fertilized egg C. Trigger the thickening of the endometrium D. Prevent smooth muscle construction, thereby preventing premature birtharrow_forwardPlasma 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_forwardUsing the following hormone choices, which of the following puts the hormones of the female menstrual cycle in the correct order starting from day 1 and assuming a pregnancy has happend. A. estrogen B. follicle stimulating hormone (FSH) C. human chorionic gonadotropin (HCG) D. luteinizing hormone (LH) E. progesterone F. testosterone O A. B, E, C, A, D O B. A, D, B, C, E O C.B, A, D, E, C O D. D, B, A, E, Carrow_forward
- Even though they are not a hormone, prostaglandins act in a similar way. Answer the following questions according to the diagram. a.Identify and Describe the control system that stimulates uterus contractions. b.Do the prostaglandins serve as a hormonal control system? If so, identify that system and shortly explain your answer.arrow_forward1a) State the organ of origin of the following hormones and the function for: GnRH, FSH, LH, Estrogen, and Progesterone. 1b) The menstrual cycle contains both positive and negative feedback loops. Explain how. Please frame your answer using the “monitor -> control centre -> effector” scheme.arrow_forwardMany hormones, including FSH, LH, progesterone, and estrogen are controlled through a negative feedback system. Although higher levels of estrogen in the follicular stage suppress the secretion of FSH and LH in the anterior pituitary, there is an LH spike at day 14 (ovulation).Can you provide an explanation as to why an LH/FSH spike may occur using the estrogen feedback loop?arrow_forward
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