Explanation A person with a spinal cord injury is able to perform proper digestive functions due to the presence of enteric nervous system that functions independently of the brain and the spinal cord. The motor fibers of the parasympathetic branch originate from the brain and the motor fibers of the sympathetic branch originate from the spinal cord. These nerve fibers control the activity of intestine as directed by the central nervous system. Enteric nervous system (ENS) also known as the second brain, is a network of neurons that controls the activity of the gastrointestinal tract...

9th Edition

ISBN: 9780135168059

Author: Marieb, Elaine Nicpon, Brady, Patricia, Mallatt, Jon

Publisher: Pearson Education, Inc.,

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Question

Chapter 15, Problem 6CRCAQ

Summary Introduction

To review:

The proper functioning of the digestive tract in case of a spinal cord injury.

Introduction:

Parasympathetic and sympathetic motor fibers of autonomic nervous system innervate the intestine. These branches mediate opposing effects on the intestine, for example, the parasympathetic fibers stimulate contraction whereas sympathetic fibers inhibit contraction.

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Chapter 15, Problem 5CRCAQ

Chapter 15, Problem 7CRCAQ

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Chapter 15 Solutions

Human Anatomy

Ch. 15 - Which fibers in the motor division of the PNS are...Ch. 15 - Prob. 2CYU Ch. 15 - Where are the sympathetic ganglia located? Where...Ch. 15 - Are visceral sensory fibers considered part of the...Ch. 15 - Which spinal nerves carry parasympathetic...Ch. 15 - Prob. 6CYU Ch. 15 - Prob. 7CYU Ch. 15 - Why are white rami communicantes located only on...Ch. 15 - What is the general effect of sympathetic...Ch. 15 - Which types of autonomic fibers (preganglionic,...

Ch. 15 - Prob. 11CYU Ch. 15 - Prob. 12CYU Ch. 15 - Which region of the CNS is the main control center...Ch. 15 - Which embryonic tissue forms the postganglionic...Ch. 15 - Which division of the ANS is deficient in...Ch. 15 - Prob. 1RQ Ch. 15 - For each of the following terms or phrases, write...Ch. 15 - The thoracic splanchnic nerves contain which kind...Ch. 15 - The collateral ganglia contain which kind of cell...Ch. 15 - Preganglionic sympathetic neurons develop from (a)...Ch. 15 - Prob. 6RQ Ch. 15 - The white rami communicantes contain what kind of...Ch. 15 - Collateral sympathetic ganglia are involved. with...Ch. 15 - Is the visceral sensory nervous system part of the...Ch. 15 - (a) Describe the anatomical relationship of the...Ch. 15 - What effect does sympathetic activation have on...Ch. 15 - Which of the effects listed in question 11 would...Ch. 15 - A friend asks you how the parasympathetic...Ch. 15 - What manifestations of decreased ANS efficiency...Ch. 15 - The students in anatomy class were having...Ch. 15 - Describe the sympathetic pathways to the (a)...Ch. 15 - Prob. 17RQ Ch. 15 - Prob. 18RQ Ch. 15 - Prob. 19RQ Ch. 15 - How do the somatic motor and visceral motor (ANS)...Ch. 15 - A 1-year-old infant has a swollen abdomen and is...Ch. 15 - Prob. 2CRCAQ Ch. 15 - Prob. 3CRCAQ Ch. 15 - Prob. 4CRCAQ Ch. 15 - Prob. 5CRCAQ Ch. 15 - Prob. 6CRCAQ Ch. 15 - Prob. 7CRCAQ Ch. 15 - Prob. 8CRCAQ

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Solution Summary: The author explains that parasympathetic and sympathetic motor fibers of autonomic nervous system innervate the intestine, and regulate peristalsis and digestion.

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