neurilemma

A cell that enfolds one or more axons of the peripheral nervous system; in myelinated fibers its plasma membrane forms the lamellae of myelin. SYN: neurolemma, sheath of Schwann. [neuri + G. lemma, husk]

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neu·ri·lem·ma .n(y)u̇r-ə-'lem-ə n the plasma membrane surrounding a Schwann cell of a myelinated nerve fiber and separating layers of myelin
neu·ri·lem·mal -'lem-əl adj

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n.
the sheath of the axon of a nerve fibre. The neurilemma of a medullated fibre contains myelin laid down by Schwann cells.
neurilemmal adj.

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neu·ri·lem·ma (noor″ĭ-lemґə) [neur- + -lemma] the thin membrane spirally enwrapping the myelin layers of certain fibers, especially of peripheral nerves, or the axons of certain unmyelinated nerve fibers. Called also neurolemma, Schwann membrane, sheath of Schwann, and endoneural membrane. neurilemmal adj

Neurilemma enclosing axon in a peripheral nerve fiber.


Medical dictionary. 2011.

Look at other dictionaries:

  • Neurilemma — Neu ri*lem ma, n. [NL., from Gr. ney^ron nerve + ? peel, skin.] (Anat.) (a) The delicate outer sheath of a nerve fiber; the primitive sheath. (b) The perineurium. [1913 Webster] …   The Collaborative International Dictionary of English

  • Neurilemma — (griech.), Nervenscheide, s. Nerven, S. 522 …   Meyers Großes Konversations-Lexikon

  • Neurilemma — (grch.), die Bindegewebsscheide der Nervenfasern (s. Nerven) …   Kleines Konversations-Lexikon

  • neurilemma — [noor΄ə lem′ə, nyoor΄lem′ə] n. [ModL, altered (infl. by Gr lemma, skin, peel) < neurilema < Gr neuron, NERVE + eilēma, a covering < eilyein, to wind, wrap: see WALK] the thin outer sheath covering a nerve fiber …   English World dictionary

  • neurilemma — neurolemma; n. the sheath of the axon of a nerve fibre. The neurilemma of a medullated fibre contains myelin laid down by Schwann cells. Derivatives: neurilemmal adj …   The new mediacal dictionary

  • neurilemma — noun Etymology: New Latin, from neur + Greek eilēma covering, coil, from eilein to wind; akin to Greek eilyein to wrap more at voluble Date: 1852 the plasma membrane surrounding a Schwann cell of a myelinated nerve fiber and separating layers of… …   New Collegiate Dictionary

  • neurilemma — see Schwann cell …   Dictionary of invertebrate zoology

  • neurilemma — neurilemmal, neurilemmatic /noor euh leuh mat ik, nyoor /, neurilemmatous, adj. /noor euh lem euh, nyoor /, n. Anat. the delicate outermost membrane of the myelin sheath of a myelinated nerve cell. [1815 25; alter. of F névrilème ( < Gk neur NEUR …   Universalium

  • neurilemma — noun The outer membranous covering of a nerve fiber …   Wiktionary

  • Neurilemma — Neu|ri|lẹm|ma 〈n.; s, lẹm|men〉 = Neurolemma * * * Neu|ri|lẹmm, Neu|ri|lẹm|ma, das; s, ...men [zu griech. neũron = Nerv u. griech. lémma = Rinde, Schale] (Med., Biol.): aus Bindegewebe bestehende Hülle der Nervenfasern …   Universal-Lexikon

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