Human Physiology: An Integrated Approach (8th Edition)
8th Edition
ISBN: 9780134605197
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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c. Prevent the germs cells being exposed to toxic concentrations of testosterone
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e. Transport testosterone to the capillaries
Write a summary on Structure Activity Relationship (SAR) of Estrogen? Or write a short note on SAR of Estrogen? Please write at your own words. Answer should be specific (8-10)lines
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Chapter 26 Solutions
Human Physiology: An Integrated Approach (8th Edition)
Ch. 26.1 - Name the male and female gonads and gametes.Ch. 26.1 - Where in a target cell would you expect to find...Ch. 26.1 - Prob. 3CCCh. 26.1 - Which sex will a zygote become if it inherits only...Ch. 26.1 - If the testes are removed from an early male...Ch. 26.2 - The gametes in a newborn male are at what stage of...Ch. 26.2 - Compare the amount of DNA in the first polar body...Ch. 26.2 - How many gametes are formed from one primary...Ch. 26.2 - Prob. 9CCCh. 26.2 - Prob. 10CC
Ch. 26.2 - Prob. 11CCCh. 26.3 - What do Sertoli cells secrete? What do...Ch. 26.3 - Prob. 13CCCh. 26.3 - Which cells of the testes have receptors for FSH?...Ch. 26.3 - Prob. 15CCCh. 26.4 - Name the phases of the ovarian cycle and the...Ch. 26.4 - Prob. 17CCCh. 26.4 - Prob. 18CCCh. 26.4 - 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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- Sex hormone binding globulin (SHBG) binds about 60% of the testosterone in circulation. What is the role of this protein?arrow_forwardEven 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_forwardLevels of the Female Reproductive Hormones during the Menstrual Cycle Hormone Day 4 Day 14 Day 21 Estrogen (pg/mL) N/A >100 <60 Progesterone (ng/mL) N/A <1.5 >15 LH (mIU/mL) <7 >15 N/A FSH (mIU/mL) <13 >15 N/A Identify the hormones numbered in the graph above. Number: Answer Answer Answer Answer Hormone: Estrogen Progesterone LH FSHarrow_forward
- Using 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_forwardWhat fraction of estrogen receptors is expected to be free in the presence of an estradiol concentration of 1 nM assuming no other ligands are present? Enter your answer in decimal form. Fraction of free estrogen receptors = 0.0909 Incorrectarrow_forwardIf progesterone and estrogen were set at artificially moderately high levels for a long period, what would result?arrow_forward
- Write a summary on Structure Activity Relationship (SAR) of Androgen? Or write a short note on SAR of Androgen? Please write at your own words. Answer should be specific (8-10)linesarrow_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
- Even though they are not a hormone, prostaglandins act in a similar way. Answer the following questions according to the diagram. 1.Do the prostaglandins serve as a hormonal control system? If so, identify that system and explain your answer. 2.Identify and Describe the control system that stimulates uterus contractions.arrow_forwardWhich of these statements does not describe the effect of progesterone; Group of answer choices a. It has a thermogenic effect b. It has a glucocorticoid effect c. It has anti-osteoporotic effects d. It raises the threshold for uterine muscle stimulation and contractionarrow_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
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