Human Physiology: An Integrated Approach (7th Edition)
7th Edition
ISBN: 9780321981226
Author: Dee Unglaub Silverthorn
Publisher: PEARSON
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Textbook Question
Chapter 26, Problem 21RQ
The following graph shows the results of an experiment in which normal men were given testosterone over a period of months (indicated by the bar from A to E). Control values of hormones were measured prior to the start of the experiment. From time B to time C, the men were also given FSH. From time D to time E, they were also given LH. Based on the information given, answer the following questions.
- (a) Why did testosterone level increase beginning at point A?
- (b) Why did LH and FSH levels decrease beginning at point A?
- (c) Predict what happened to the men’s sperm production in the A–B interval, the B–C interval, and the D–E interval.
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Sertoli cells produce androgen binding protein. The purpose of this androgen binding protein is to :
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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
All of the following are true statements except:
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a. there are at least 16 different prostaglandins.
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Chapter 26 Solutions
Human Physiology: An Integrated Approach (7th Edition)
Ch. 26 - Name the male and female gonads and gametes.Ch. 26 - Where in a target cell would you expect to find...Ch. 26 - Prob. 3CCCh. 26 - Which sex will a zygote become if it inherits only...Ch. 26 - If the testes are removed from an early male...Ch. 26 - The gametes in a newborn male are at what stage of...Ch. 26 - Compare the amount of DNA in the first polar body...Ch. 26 - How many gametes are formed from one primary...Ch. 26 - Prob. 9CCCh. 26 - Prob. 10CC
Ch. 26 - Prob. 11CCCh. 26 - What do Sertoli cells secrete? What do...Ch. 26 - Prob. 13CCCh. 26 - Which cells of the testes have receptors for FSH?...Ch. 26 - Prob. 15CCCh. 26 - Name the phases of the ovarian cycle and the...Ch. 26 - Prob. 17CCCh. 26 - Prob. 18CCCh. 26 - On what day of the menstrual cycle will a woman...Ch. 26 - Match each of the following items with all the...Ch. 26 - The Y chromosome contains a region for male sex...Ch. 26 - List the functions of the gonads. How do the...Ch. 26 - Define each of the following terms and describe...Ch. 26 - Trace the anatomical routes to the external...Ch. 26 - Prob. 6RQCh. 26 - Prob. 7RQCh. 26 - List and give a specific example of the various...Ch. 26 - Prob. 9RQCh. 26 - Prob. 10RQCh. 26 - Diagram the menstrual cycle, distinguishing...Ch. 26 - Prob. 12RQCh. 26 - Define and relate each of the following terms in...Ch. 26 - Compare the actions of each of the following...Ch. 26 - Prob. 15RQCh. 26 - Discuss the roles of each of the following...Ch. 26 - Prob. 17RQCh. 26 - Prob. 18RQCh. 26 - An XY individual inherits a mutation that results...Ch. 26 - Prob. 20RQCh. 26 - The following graph shows the results of an...
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- If progesterone and estrogen were set at artificially moderately high levels for a long period, what would result?arrow_forwardWhich of the following would be better handled with an endocrine system response (not a nervous system response) and why: A. Assessing a noise in your environment (such as the hum of an air conditioner), and adapting to it (so you no longer unnecessarily pay attention to something unimportant). B. Stimulating the gradual development (it takes days!) of follicles in the ovary, because hormonal signals have a more extended duration than a nervous system signal. C. Both choice A and choice B D. Neither A nor B.arrow_forwardA male athlete taking large amounts of an androgenic steroid becomes sterile (unable to produce sperm capable of causing fertilization). Explain.arrow_forward
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