- 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. 2011.
unmyelinated fibers
Look at other dictionaries:
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
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
C fibers — unmyelinated nerve fibers, having a smaller diameter (0.3 to 1.3 μm) and a slower conduction velocity (0.6 to 2.3 meters per second) than alpha fibers. They are found as postganglionic (efferent) fibers of the autonomic nervous system, and… … Medical dictionary
gray fibers — unmyelinated nerve fibers, found largely, but not exclusively, in the sympathetic nerves … Medical dictionary
pilomotor fibers — unmyelinated nerve fibers going to the small muscles of the hair follicles … Medical dictionary
sudomotor fibers — unmyelinated nerve fibers going to the sweat glands … Medical dictionary
vasomotor fibers — unmyelinated nerve fibers going chiefly to arteriolar muscles … Medical dictionary
myelinated fibers — myelinated nerve fibers grayish white nerve fibers whose axons are encased in a myelin sheath, which may in turn be enclosed by a neurilemma; called also medullated f s and medullated nerve f s. Cf. unmyelinated f s … Medical dictionary
