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node of Ranvier

   Also found in: Medical, Encyclopedia, Wikipedia 0.03 sec.
node of Ran·vier  (ränvy, rän-vy, rä-)
n. pl. nodes of Ranvier
A constriction in the myelin sheath, occurring at varying intervals along the length of a nerve fiber.
[After Louis Antoine Ranvier (1835-1922), French histologist.]
node of Ranvier [ˈrɑːnvɪˌeɪ]
n
(Life Sciences & Allied Applications / Anatomy) any of the gaps that occur at regular intervals along the length of the sheath of a myelinated nerve fibre, at which the axon is exposed
[named after Louis-Antoine Ranvier (1835-1922), French histologist]


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