node of Ran|vier

node of Ran|vier
node of Ran|vier «rahn VYAY»,
the site of a local constriction in the myelin and axon of a myelinated nerve cell: »

The ion movements can occur only in the gaps in the myelin sheath…called the nodes of Ranvier, and the nerve impulse has to jump from one node to the next (New Scientist).

[< L. A. Ranvier, 1835-1922, a French histologist]

Useful english dictionary. 2012.

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  • node of Ranvier — node of Ran·vier rän vē .ā n a small gap in the myelin sheath of a myelinated nerve fiber Ran·vier rȧn vyā Louis Antoine (1835 1922) French histologist. Ranvier was one of the foremost histologists of his time. He is credited with transforming… …   Medical dictionary

  • node of Ranvier — node′ of Ran•vier′ [[t]rɑnˈvyeɪ, ˈrɑn vyeɪ[/t]] n. cbl a gap occurring at regular intervals between segments of myelin sheath along a nerve axon • Etymology: after Louis Antoine Ranvier (1835–1922), French histologist …   From formal English to slang

  • nodeof Ranvier — node of Ran·vier (ränʹvyā, rän vyāʹ, räɴ ) 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.] * * * …   Universalium

  • Ranvier crosses nodes segment (internode) tactile disks — Ran·vier crosses, nodes, segment (internode), tactile disks (rahn vyaґ) [Louis Antoine Ranvier, French pathologist, 1835–1922] see under cross, disk, and node, and see internodal segment under segment …   Medical dictionary

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