A nerve fiber is a threadlike extension of a nerve cell and consists of an axon and myelin sheath (if present) in the nervous system. There are nerve fibers in the central nervous system and peripheral nervous system. A nerve fiber may be myelinated and/or unmyelinated. In the central nervous system (CNS), myelin is produced by oligodendroglia cel... Found on http://en.wikipedia.org/wiki/Nerve_fiber
a slender process of a neuron, especially the prolonged axon that conducts nerve impulses away from the cell; classified as either afferent (conducting motor impulses to muscles) or efferent fibers (conducting sensory impulses from receptors in the periphery inwards toward the brain). Fibers are also distinguished as either myelinate... Found on http://www.encyclo.co.uk/local/21001
Type: Term Definitions: 1. the axon of a nerve cell, ensheathed by oligodendroglial cells in brain and spinal cord, and by Schwann cells in peripheral nerves. Found on http://www.medilexicon.com/medicaldictionary.php?t=32911