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 histology from a descriptive into an experimental science. Most of his research focused on detailed nerve and skin structure. He discovered in 1871 the interruptions of the myelin sheaths, which are now known as the nodes of Ranvier. Ranvier also produced a major study on cicatrization. With the French bacteriologist André-Victor Cornil (1837-1908) he produced a manual of histopathology that ranks as one of the landmarks of medicine in the 19th century.

Medical dictionary. 2011.

Look at other dictionaries:

  • 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′ [[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 …   Medical dictionary

  • 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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