neurilemma

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neurilemma

 [noor″ĭ-lem´ah]
the plasma membrane of a Schwann cell, forming the sheath of Schwann of a myelinated or unmyelinated peripheral nerve. adj., adj neurilem´mal.

neu·ri·lem·ma

(nū'ri-lem'ă), Despite etymologic arguments in favor of the alternative spellings neurilema and neurolemma, by far the most usual spelling is neurilemma.
A Schwann cell that enfolds one or more axons of the peripheral nervous system; in myelinated fibers, its plasma membrane forms the lamellae of myelin.
[neuri + G. lemma, husk]

neurilemma

/neu·ri·lem·ma/ (noor″ĭ-lem´ah) the thin membrane spirally enwrapping the myelin layers of certain fibers, especially of the peripheral nerves, or the axons of some unmyelinated nerve fibers.
Neurilemma enclosing axon in a peripheral nerve fiber.

neurilemma

(no͝or′ə-lĕm′ə, nyo͝or′-)
n.
2. The sheath that is formed by a Schwann cell.

neu′ri·lem′mal adj.

neurilemma

[noo͡r′əlem′ə]
Etymology: Gk, neuron + lemma, sheath
a layer of cells composed of one or more Schwann cells that forms the segmented myelin sheaths of peripheral nerve fibers. It is necessary for regeneration of peripheral nerves when they have been severed. Also spelled neurolemma. Also called Schwann sheath. neurilemmal, neurilemmatic, neurilemmatous, adj.

neu·ri·lem·ma

(nūr'i-lem'ă)
A cell that enfolds one or more axons of the peripheral nervous system; in myelinated fibers its plasma membrane forms the lamellae of myelin.
Synonym(s): neurolemma, sheath of Schwann.
[neuri- + G. lemma, husk]

neurilemma

An outer covering of flattened cells that surrounds the MYELIN sheath of the nerve fibres (axons) of the larger peripheral nerves. Neurilemma also covers the axons of non-myelinated nerve fibres. Also known as the sheath of Schwann.

neurilemma

a tough, thin membrane of scleroprotein surrounding the MYELIN SHEATH of myelinated nerve fibres. It is part of the SCHWANN CELL, lying close to the axon, and dips down to the nerve fibre between the Schwann cells, forming the node of Ranvier. See diagram at NEURON.

Schwann,

Theodor, German histologist and physiologist, 1810-1882.
Schwann cell unit - a single Schwann cell and all of the axons lying in troughs indenting its surface.
Schwann cells - cells of ectodermal (neural crest) origin that compose a continuous envelope around each nerve fiber of peripheral nerves. Synonym(s): neurilemma cells
Schwann tumor
Schwann white substance - the lipid material present in the myelin sheath of nerve fibers; the medulla of bones and other organs.
schwannoma - Synonym(s): neurilemoma; neuroschwannoma
sheath of Schwann - a cell that enfolds one or more axons of the peripheral nervous system. Synonym(s): neurilemma

neurolemma

; neurilemma cells enfolding/enwrapping one or more peripheral nerve axons

neu·ri·lem·ma

(nūr'i-lem'ă)
A cell that enfolds axons of the peripheral nervous system.
Synonym(s): sheath of Schwann.
[neuri- + G. lemma, husk]

neurilemma (nyoo´rilem´ə),

n the thin membranous outer covering surrounding the myelin sheath of a medullated nerve fiber or the axis cylinder of a nonmedullated nerve fiber. Neurilemma is associated with the booster mechanisms for the rapid transmission of impulses. Also called
sheath of Schwann.

neurilemma

the plasma membrane of a Schwann cell, forming the sheath of Schwann of a myelinated or unmyelinated peripheral nerve.