Human Anatomy & Physiology (9th Edition)

Published by Pearson
ISBN 10: 0321743261
ISBN 13: 978-0-32174-326-8

Chapter 11 - Fundamentals of the Nervous System and Nervous Tissue - Review Questions - Page 426: 5


(a) heavily myelinated, large-diameter fibers

Work Step by Step

The larger the diameter of a nerve fiber, the faster a nerve impulse can travel down that fiber. Regardless of the diameter, a myelin sheath increases the velocity of a nerve impulse. Therefore, the fastest nerve impulses occur when a nerve fiber has both a large diameter and a myelin sheath.
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.