Campbell Essential Biology with Physiology (6th Edition)
6th Edition
ISBN: 9780134711751
Author: Eric J. Simon, Jean L. Dickey, Jane B. Reece
Publisher: PEARSON
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Chapter 25, Problem 10SQ
Summary Introduction
Concept introduction: The male and the female gonads secrete the sex hormones. Testosterone is a male sex hormone that is secreted by the cells of the testis, which induces the development of secondary sexual characteristics like beard, moustache, and increase in girth of muscle mass, acts in the vocal cords, and deepens the voice and changes the shape of face and skeleton.
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Knowing what you do about the feedback effects of testosterone on the anterior pituitary gland, explain the reason that male athletes who take anabolic steroids become temporarily sterile (anabolic steroids are steroids that mimic some actions of testosterone).
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Chapter 25 Solutions
Campbell Essential Biology with Physiology (6th Edition)
Ch. 25 - Which of the following statements concerning...Ch. 25 - Prob. 2SQCh. 25 - Explain how the same hormone can have different...Ch. 25 - Which of the following controls the activity of...Ch. 25 - Prob. 5SQCh. 25 - A patient comes to a local health clinic with a...Ch. 25 - Prob. 7SQCh. 25 - Your roommate has just been diagnosed as...Ch. 25 - Prob. 9SQCh. 25 - Prob. 10SQ
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- _____________ hormones are secreted directly into the bloodstream.arrow_forwardEach hormone molecule in living organisms is recognized by specific cells called _____________.arrow_forwardWhat effect will the addition of a sulfate group have on the properties of Testosterone? Why is this important? Note:Need answer urgently (within 30 minutes)arrow_forward
- Three main chemical classes of hormones and examples of eacharrow_forwardA 38-year-old male is upset about his low sperm count and visits a "practitioner" who commonly advertises his miracle cures of sterility. The practitioner is a quack who treats conditions of low sperm count with megadoses of testosterone. Although his patients experience a huge surge in libido, their sperm count is even lower after hormone treatment. a) Which two glands would be responsive to the megadose of testosterone? b) Identify the two hormones that would be affected by the megadose of testosterone. Would their levels increase or decrease? c) What role, if any, would either of the affected hormones have on the man's reduced sperm count?arrow_forwardA 38-year-old male is upset about his low sperm count and visits a “practitioner” who commonly advertises his miracle cures for sterility. In fact, the practitioner is a quack who treats conditions of low sperm count with megadoses of testosterone. Although his patients experience a huge surge in libido, their sperm count is even lower after hormone treatment; why?arrow_forward
- A reproductive hormone that is secreted directly from the anterior pituitary is follicle-stimulating hormone. progesterone. testosterone. estradiol. gonadotropin-releasing hormone.arrow_forwardamine hormones are very large compared to other hormonesarrow_forwardWhich one affects Ca2+ level 1. Steroid hormones 2.Protein hormonesarrow_forward
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