nerve fibre

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Related to nerve fibers: C nerve fibers, afferent nerve fibers

nerve fibre

the AXON of a NERVE (1) together with its surrounding membranes.
Part of a myelinated nerve fibre.

nerve fibre

component of all nerves and their branches in the peripheral nervous system (PNS), and of the tracts in the central nervous system (CNS). The central axontransmits nerve impulses (action potentials) to the nerve terminal in motor (efferent) nerves, or from a receptor to a nerve cell body in sensory (afferent) nerves. Also common to all nerve fibres are an outermost covering (neurilemma) and within that the Schwann cells which are crucial to the regeneration process if a fibre is damaged. In myelinated nerve fibres (including motor nerves to skeletal muscle) there is a fatty myelin sheath between the axon and the neurilemma, interrupted at intervals by the 'nodes of Ranvier'; action potentials 'jump' between these, enabling faster conduction. Each efferent nerve fibre runs from a nerve cell body to terminal branches at a nerve-to-nerve synapse or at an effector organ; each afferent fibre runs from a sensory receptor to a relay site in the CNS.
References in periodicals archive ?
They sought to determine whether SIV infection leads to decreases in corneal nerve fiber density, and whether corneal nerve fiber density correlates with epidermal nerve fiber length counts, thereby setting the stage for follow-up investigation using corneal confocal microscopy.
Based on knowledge of the molecular structure of myelin, the Nottingham physicists devised a new model in which the nerve fibers are represented as long thin hollow tubes with special (anisotropic) magnetic properties.
Yadav believes that this proof-of-concept trial will help determine whether lipoic acid has potential as a therapy that can protect people with MS from nerve fiber damage and resulting disability.
However, on aligned nanofiber scaffolds, they not only observed nerve fibers growing from the tissue but the nerve fibers were aligned in the same orientation as the nanofibers.
Stimulation of the hair bundle, as we have seen, causes membrane depolarization, neurotransmitter release, and action potential discharges in auditory nerve fibers.
Because of the differences and stage of nerve damage, proximal nerve fibers are the least affected and distal nerve fibers are more likely to have greater structural damage.
We must accordingly hope that the mutation can instead be in the nature of the giant organism, humankind, itself--a mutation in the means of communication, in the nerve fibers of the organization, that will transfer to this whole great organism some of the desirable and admirable attributes that are possessed by the units of which it is composed, the individual human beings.
Glucose transporter-1 strongly stained the perineurium but did not stain the nerve fibers within the perineurium, thus giving a ringlike staining pattern (Figures 1 through 5).
Myelin is a critical insulator, helping nerve fibers conduct the electrical impulses that drive ambulation, speech, sight, and hearing.
There is an unprecedented sense of optimism among scientists that restoring function by regrowing spinal nerve fibers will be possible.
The tumor results from an overproduction of Schwann cells -- small sheet-like cells that normally wrap around nerve fibers like onion skin and help support the nerves.
Damage to or loss of small nerve fibers often results in burning pain, tingling or numbness that typically affects the limbs.