Node-of-ranvier definition

ränvyā, rän-vyā, räɴ-
A constriction in the myelin sheath, occurring at varying intervals along the length of a nerve fiber.
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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.
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A constriction in the myelin sheath, occurring at varying intervals along the length of a nerve fiber.
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(anatomy) A small constriction in the myelin sheath of axons.
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Other Word Forms

Noun

Singular:
node-of-ranvier
Plural:
nodes-of-ranvier

Origin of node-of-ranvier

  • After Louis Antoine Ranvier (1835–1922), French histologist

    From American Heritage Dictionary of the English Language, 5th Edition

  • For Louis-Antoine Ranvier French physician

    From Wiktionary