Human Biology, 14 Edition

Published by McGraw-Hill Education
ISBN 10: 1-25924-574-8
ISBN 13: 978-1-25924-574-9

Chapter 14 - Engage - Page 309: 1


Myelination permits the signal to jump quickly from node to node.

Work Step by Step

Depolarization occurs only at the nodes of Ranvier (Ranvier sheath gaps). The area of the node is unmyelinated and rich with electrolytes; the AP jumps from one node to the next. This type of so-called saltatory conduction is very fast.
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