Schmidt-Lanterman incisures
- Schmidt-Lanterman incisures
Infobox Anatomy
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Caption = Diagram of longitudinal sections of medullated nerve fibers. (Incisure labeled at upper left.)
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DorlandsPre = i_05
DorlandsSuf = 12447772
In the peripheral nervous system (PNS) axons can be either myelinated or unmyelinated. Myelination means that the axon is insulated by surrounding layers of fatty membrane (myelin) produced by Schwann cells. These layers are continuous (like rolling up rope), but, due to the way they are formed, they often include small amounts of Schwann cell cytoplasm not displaced to the periphery during Schwann cell formation of the myelin. These are the so called Schmidt-Lanterman cleft (a.k.a. Schmidt-Lanterman incisures,clefts of Schmidt-Lanterman, segments of Lanterman, medullary segments), which subdivide the myelinated axon into irregular portions. They are histological evidence of the small amount of cytoplasm that remains in the inner layer of the myelin sheath created by Schwann cells wrapping tightly around a nerve.
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* [http://www3.umdnj.edu/histsweb/lab8/lab8nerve3.html Slide at umdnj.edu]
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Schmidt-Lanterman incisures (clefts) segment — Schmidt Lan·ter·man incisures (clefts), segment (shmitґ lanґtər mən) [Henry D. Schmidt, American anatomist, 1823–1888; A.J. Lanterman, American anatomist in Germany, late 19th century] see under incisure, and see medullary segment,… … Medical dictionary
Schmidt-Lanterman incisures — channels of cytoplasm in the myelin sheath of neurons that lead back to the Schwann cell body; they appear as oblique lines or slashes in the sheath. See Plate 39 … Medical dictionary
Lanterman incisures (clefts) — Lan·ter·man incisures (clefts) (lanґtər mən) [A.J. Lanterman, American anatomist in Germany, late 19th century] Schmidt Lanterman incisures; see under incisure … Medical dictionary
Incisures de Schmidt-Lanterman — Un axone myélinisé du systeme nerveux periphérique Les incisures de Schmidt Lanterman sont des incisures transversales (visualisables en microscopie électronique) situées sur la myéline dite non compacte des axones situés au niveau du système… … Wikipédia en Français
Lanterman clefts — Schmidt Lanterman incisures … Medical dictionary
Lanterman-Schmidt incisures — Lan·ter·man Schmidt incisures (lanґtər mən shmitґ) [A.J. Lanterman; Henry D. Schmidt, American anatomist, 1823–1888] Schmidt Lanterman incisures; see under incisure … Medical dictionary
incisures of Lanterman — Lanterman Schmidt incisures Schmidt Lanterman i s … Medical dictionary
Lanterman — A.J., 19th century U.S. anatomist in Strasbourg. See L. incisures, under incisure, L. segments, under segment, Schmidt L. clefts, under cleft, Schmidt L. incisures, under incisure … Medical dictionary
Schmidt — Gerhard, U.S. biochemist, *1900. See S. Thannhauser method. Henry D., U.S. anatomist and pathologist, 1823–1888. See S. Lanterman clefts, under cleft, S. Lanterman incisures, under incisure. Johann F.M., German laryngologist, 1838–1907. See S.… … Medical dictionary
incisure — SYN: notch. [L. incisura] angular i. [TA] a sharp angular depression in the lesser curvature of the stomach at the junction of the body with the pyloric canal. SYN: incisura angularis [TA], angular notch, sulcus angularis. Lanterman incisures SYN … Medical dictionary
