Explanation Explanation for the correct answer: Option (b) is given as the reproductive system. In order to produce a single action, both the sympathetic and parasympathetic nerve work together in the reproductive organs. The parasympathetic nerve stimulates erection of the penis due to vasodilation, whereas ejaculation is due to sympathetic nerve stimulation. Thus, they work in cooperation to enable the sexual function in males. In female, orgasm is a sympathetic nerve response and the parasympathetic nerve causes the clitoral erection and vaginal secretions. Therefore, o ption (b) is correct. Â Explanation for the incorrect answer: Option (a) is given as the heart. The best example of antagonism is the effect of sympathetic and parasympathetic innervations of the pacemaker region of the heart...

15th Edition

ISBN: 9781259864629

Author: Fox, Stuart Ira

Publisher: Mcgraw-hill Education,

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Question

Chapter 9, Problem 6RA

Summary Introduction

To determine:

The organ(s) where the cooperative effect of parasympathetic and sympathetic fibers are observed.

Introduction:

The two divisions of the autonomic nervous system are associated with the regulation of the visceral organs. Many visceral organs receive dual innervation, that is, they are innervated by both sympathetic and parasympathetic fibers. Thus, their effect may be complementary, cooperative, or antagonistic.

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Chapter 9, Problem 5RA

Chapter 9, Problem 7RA

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Chapter 9 Solutions

Human Physiology

Ch. 9 - Describe the preganglionic and postganglionic...Ch. 9 - Compare the control of cardiac muscle and smooth...Ch. 9 - Describe the sympathetic pathway from the CNS to...Ch. 9 - Prob. 4CP Ch. 9 - Prob. 5CP Ch. 9 - Prob. 6CP Ch. 9 - Prob. 7CP Ch. 9 - Prob. 8CP Ch. 9 - Explain how the effects of the sympathetic and...Ch. 9 - Prob. 1RA

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Solution Summary: The author explains that the cooperative effect of parasympathetic and sympathetic fibers is seen in the reproductive system.

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