unmyelinated nerve

a nerve whose fibers (axons) are not encased in a myelin sheath, and which may or may not be enclosed by a neurilemma. Cf. myelinated n.

Medical dictionary. 2011.

Look at other dictionaries:

  • unmyelinated fibers — unmyelinated nerve fibers nerve fibers (axons) that lack the myelin sheath but may be enclosed by a neurilemma. Called also nonmedullated f s and nonmedullated nerve f s. Cf. myelinated f s …   Medical dictionary

  • Nerve fiber — Latin neurofibra MeSH Nerve+Fibers Code TA A14.0.00.001 A nerve fiber is a threadlike extension of a nerve cell and consists of an axon …   Wikipedia

  • Nerve — A bundle of fibers that uses electrical and chemical signals to transmit sensory and motor information from one body part to another. See nervous system. * * * A whitish cordlike structure composed of one or more bundles (fascicles) of myelinated …   Medical dictionary

  • Nerve net — For the album by Brian Eno, see Nerve Net (album). Nettle Jelly A nerve net is a type of simple nervous system that is found in members of the cnidaria, ctenophora, and echinodermata phyla. Nerve nets consist of interconnected neurons lacking a… …   Wikipedia

  • unmyelinated — Denoting nerve fibers (axons) lacking a myelin sheath. SYN: amyelinated, amyelinic, nonmedullated, nonmyelinated, unmedullated. * * * un·my·elin·at·ed mī ə lə .nāt əd adj lacking a myelin sheath <unmyelinated axons> * * * …   Medical dictionary

  • unmyelinated — adjective (of neurons) not myelinated • Ant: ↑myelinated • Pertains to noun: ↑myelin * * * “+ adjective : lacking a myelin sheath the unmyelinated fiber found in the mammalian central nervous system H.J.Curtis & K.S.Cole * * * …   Useful english dictionary

  • unmyelinated — /un muy euh leuh nay tid/, adj. Anat. pertaining to nerve fibers that are not covered with a myelin sheath. [1915 20; UN 1 + MYELINATED] * * * …   Universalium

  • Trigeminal nerve — Nerve: Trigeminal nerve Trigeminal nerve, shown in yellow …   Wikipedia

  • Group C nerve fiber — Infobox Anatomy Name = PAGENAME Latin = GraySubject = GrayPage = Caption = C fiber not labeled, but substantia gelatinosa of Rolando is Rexed lamina II, labeled at upper left. Caption2 = Precursor = System = Artery = Vein = Nerve = Lymph =… …   Wikipedia

  • Cranial nerve zero — Latin nervus terminalis Code TA A14.2.01.002 The terminal nerve, or cranial nerve zero, was discovered by German scientist Gustav Fritsch in 1878 in the brains of sharks. It was first found in humans in 1913 …   Wikipedia

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