Explanation The spinal cord can be defined as the cylindrical bundle of the nerve fibers and connected tissue. It is surrounded in the spinal region and joins approximately all the body parts to the brain. It forms the central nervous system with the brain. A spinal nerve : It can be defined as a mixed nerve that carries sensory, motor, and autonomic signals or information between the spinal cord and the remaining body. In the human body, there are present 31 pairs of spinal nerves. These are located one on each side of the vertebral column. The two roots of a spinal nerve that functions differently are: Posterior root and Anterior root. 1. Posterior root : It is also known as the dorsal root of spinal nerve. It originates from the spinal cord. It travels to the dorsal root ganglion. This root spreads the sensory information and forms the afferent sensory root of a spinal nerve. Thus, it is sensory in function. The neurosomas of this root are present in the posterior root ganglion. It is a small expansion or swelling on the posterior nerve root within the spine just before the nerve exits the spinal nerve canal...

Laboratory Manual For Human Anatomy & Physiology

4th Edition

ISBN: 9781260159363

Author: Martin, Terry R., Prentice-craver, Cynthia

Publisher: McGraw-Hill Publishing Co.

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Question

Chapter 28, Problem 4.2A

Summary Introduction

To describe:

The effect due to the damage to the anterior root of a spinal nerve.

Introduction:

Motor control can be defined as the systematic control of movement in organisms which contain a nervous system. The primary motor cortex (M1) is the main area of the brain that is involved in the motor function. M1 is present in the frontal lobe of the brain.

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Chapter 28, Problem 4.1A

Chapter 28, Problem 4.3A

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Chapter 28 Solutions

Laboratory Manual For Human Anatomy & Physiology

Ch. 28 - The ____________ is the most superficial membrane...Ch. 28 - The inferior end of the adult spinal cord...Ch. 28 - Prob. 3PL Ch. 28 - Which of the following is not part of the gray...Ch. 28 - The central canal of the spinal cord is located...Ch. 28 - The brachial plexus is formed from components of...Ch. 28 - There are eight pairs of cervical spinal nerves....Ch. 28 - The major ascending (sensory) and descending...Ch. 28 - Match the terms in column A with the descriptions...Ch. 28 - Prob. F28.14A

Ch. 28 - The spinal cord gives rise to 31 pairs...Ch. 28 - The bulge in the spinal cord that gives off nerves...Ch. 28 - The bulge in the spinal cord that gives off nerves...Ch. 28 - The ______________ is a groove that extends the...Ch. 28 - In a spinal cord cross section, the posterior...Ch. 28 - The axons of motor neurons are found in the...Ch. 28 - The _______________ connects the gray matter on...Ch. 28 - The _______ in the gray commissure of the spinal...Ch. 28 - The white matter of the spinal cord is divided...Ch. 28 - There are ______________________ pairs of cervical...Ch. 28 - There are ______________________ pairs of sacral...Ch. 28 - Cervical spinal nerve pair C1 originates between...Ch. 28 - Spinal nerves L4 through S4 form a...Ch. 28 - The gray matter of the spinal cord is divided into...Ch. 28 - The spinal cord ends just inferior to L1 in a...Ch. 28 - Severing the ______________________ nerves of the...Ch. 28 - The inferior and superior gluteal nerves of the...Ch. 28 - To block chronic pain in a patient, sometimes...Ch. 28 - Prob. 4.2A Ch. 28 - Injuries to the vertebral column and spinal cord...Ch. 28 - Why are intramuscular injections given in the...Ch. 28 - Prob. 4.2CT

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Solution Summary: The author explains that motor control is the systematic control of movement in organisms which contain a nervous system.

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