myelinated fiber


Also found in: Dictionary, Thesaurus, Legal, Financial, Encyclopedia.
Related to myelinated fiber: myelin sheath

myelinated fiber

(mī′ə-lə-nā′tĭd)
n.
An axon enveloped by a myelin sheath formed by oligodendroglial cells in the brain and spinal cord or by Schwann cells in the peripheral nerves.

myelinated fiber

A nerve fiber whose axon (dendrite) is wrapped in a myelin sheath.
See also: fiber
References in periodicals archive ?
bio]) of the myelinated fiber volume and length among brains was estimated from the calculated stereological sampling variation (observed coefficient of error, OCE) and observed inter-brain coefficient of variation (OCV), using the relationship: OC[V.
SIGMA]Y is the number of the myelinated fiber profiles in each block or number of the points hitting on the fiber profiles in each block and n is the number of blocks used when estimating the length or volume density of the myelinated fibers in the white matter.
An efficient and unbiased stereological method was applied to estimate the white matter volume, the total volume, total length and mean diameter of the myelinated fibers in the white matter and the total volume of the myelin sheaths in the white matter of rat brain.
This evaluation permitted the visualization of a significant effect of GBP, augmenting the area or the density of myelinated fibers, as well as reducing the area of degenerated tissue.
Large-diameter myelinated fibers (motor, sensory) undergo the most damage.
11] Demyelinated fibers do not conduct rapid trains of stimuli as well as myelinated fibers and go into conduction block after repeated use.
30] In normally myelinated fibers, the opposite is true; small increases in temperature actually increase conduction velocity.