node of Ranvier

node of Ranvier
one of the gaps that occur at regular intervals in the myelin sheath of medullated nerve fibres, between adjacent Schwann cells.

Medical dictionary. 2011.

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  • node of Ranvier — [rän vyā′] n. pl. nodes of Ranvier [after L. A. Ranvier (1835 1922), Fr histologist] 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… …   English World dictionary

  • 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

  • node of Ranvier — Etymology: Louis A. Ranvier died 1922 French histologist Date: circa 1885 a small gap in the myelin sheath of a myelinated nerve fiber …   New Collegiate Dictionary

  • node of Ranvier — /rahn vyay , rahn vyay/, Cell Biol. a gap occurring at regular intervals between segments of myelin sheath along a nerve axon. [1880 85; after Louis Antoine Ranvier (1835 1922), French histologist, who described it in 1878] * * * …   Universalium

  • node of Ranvier — [ rα:nvɪəɪ] noun Anatomy a gap in the myelin sheath of a nerve, between adjacent Schwann cells. Origin C19: named after the French histologist Louis Antoine Ranvier …   English new terms dictionary

  • node of ranvier — ränˈvyā Usage: usually capitalized R Etymology: after Louis A. Ranvier died 1922 French histologist : a constriction in the medullary sheath of a medullated nerve fiber …   Useful english dictionary

  • node of Ranvier — A region of exposed neuronal plasma membrane in a myelinated axon. Nodes contain very high concentrations of voltage gated ion channels, and are the site of propagation of action potentials by saltatory conduction …   Dictionary of molecular biology

  • node of Ranvier — noun A small constriction in the myelin sheath of axons …   Wiktionary

  • node of Ranvier — one of the gaps that occur at regular intervals in the myelin sheath of medullated nerve fibres, between adjacent Schwann cells …   The new mediacal dictionary

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