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nodes of Ranvier

Variant of node of Ranvier

any of the constrictions along the myelin sheath that surrounds an axon of a nerve cell: nodes are formed where two Schwann cells meet and are essential to the proper transmission of nerve impulses

Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.

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