NEURILEMMA
\njˈuːɹa͡ɪlmə], \njˈuːɹaɪlmə], \n_j_ˈuː_ɹ_aɪ_l_m_ə]\
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The outermost part of the ectodermal sheath of myelinated nerve fibers, including the sheath cell nucleus and its cytoplasm but not the concentric myelin-containing lamellae. Multiple nonmyelinated fibers may be contained within a single neurolemma sheath. (Lockard, Desk Reference for Neuroscience, 2d ed)
By DataStellar Co., Ltd
By William R. Warner
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The fine transparent, and apparently fibrous membrane that surrounds the nerves-to every filament of which it forms a true canal. Robin restricts the term perinevre to the structure that invests the primitive bundles of nerves; and every nervous filament. It differs from the neurilemma, in its ordinary acceptation, which forms a coat of some thickness in the larger nerves, and supports the nutrient vessels, whilst the perinevre exhibits no capillaries.
By Robley Dunglison
By Willam Alexander Newman Dorland
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Syn. : sheath of Schwann. 1. The elastic, hyaline, apparently structureless sheath inclosing a nerve fiber. By some authors the term n. is restricted to the peripheral medullated nerves, whereas others describe non-medullated nerves as possessing a n. but without nodes of Ranvier. See also internode of Ranvier, under internode. [Gr.]
By Smith Ely Jelliffe
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