Essentials of Human Anatomy & Physiology Laboratory Manual (6th Edition)
Essentials of Human Anatomy & Physiology Laboratory Manual (6th Edition)
6th Edition
ISBN: 9780321947918
Author: Elaine N. Marieb
Publisher: PEARSON
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Chapter 7, Problem 1MC
Summary Introduction

Introduction:

The voluntary movements of the body are performed with the help of skeletal muscle. These voluntary actions are associated with the peripheral nervous system. The somatic nervous system comprises of afferent and efferent nerves also it is a part of the peripheral nervous system.

Expert Solution & Answer
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Answer to Problem 1MC

Correct answer:

The somatic nervous system is responsible for voluntary activity and it works in conjugation with the sensory nervous system.

Explanation of Solution

Justification for the correct answer:

Option (b) is given that it is responsible for the voluntary activity. It is a known fact that the somatic nervous system falls under the peripheral nervous system which is associated with controlling the voluntary movements of the body. Hence, option (b) is correct.

Option (d) is given that it works in conjugation with the sensory nervous system. It has already been said that the somatic nervous system comprises of afferent nerves also known as sensory nerves. Therefore, both the system works with the support of each other. Hence, option (d) is correct.

Justification for the incorrect answers:

Option (a) is given that it carries information into the central nervous system. The somatic nervous system comprises of-

a) Afferent nerves- These are the sensory nerves which are responsible for carrying information such as sensation from the skin to the central nervous system.

b) Efferent nerves- These are motor nerves which are responsible for carrying out commands from the central nervous to a particular body part. Therefore, the somatic nervous system is responsible for both carrying information into and out of the central nervous system. So, it is an incorrect option.

Option (c) is given that it is divided into parasympathetic and sympathetic branches. The automatic nervous system is associated with the involuntary responses and is divided into sympathetic and parasympathetic nervous system. Therefore, it is the automatic nervous system which is divided into sympathetic and parasympathetic and not the somatic nervous system. So, it is an incorrect option.

Hence, options, (a) and(c) are incorrect.

Conclusion

Thus, it can be concluded that somatic nervous system falls into the category of the peripheral nervous system which is known to control the voluntary movements of the body and this system comprises of afferent and efferent nerves.

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Describe the passage of information through the nervous system using a specific example. Be sure to include in detail: The collection of stimuli at the sense organ and receptors involved as well as graded potential. The passing of the impulse along ascending pathways. Location in the brain that processes the information. Sending out motor information from brain. The passing of the impulse down descending pathways. Response by a skeletal muscle. each part needs to be answered in a lengthy answer
Match the following statements about anatomy to the correct division of the autonomic nervous system.  Select "Both" if the statement or effect is true of both divisions. Innervate(s) most major organs of the body. Innervate(s) most blood vessels. Most effector pathways involve two neurons. The vagus cranial nerve carries these fibers. ANSWER OPTIONS: Parasympathetic, Sympathetic, BOTH
Describe the passage of information through the nervous system using a specific example. Be sure to include in detail:

Chapter 7 Solutions

Essentials of Human Anatomy & Physiology Laboratory Manual (6th Edition)

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