Schmidt-Lanterman clefts -->
Schmidt-Lanterman incisures
medical dictionary

Funnel-shaped interruptions in the regular structure of the myelin sheath of nerve fibres, formerly interpreted as actual breaks in the sheath but shown by electron microscopy to correspond each to a strand of cytoplasm locally separating the two otherwise fused oligodendroglial (or, in peripheral nerves, Schwann cell) membranes composing the myelin sheath.

Synonyms: Lanterman's incisures, Schmidt-Lanterman clefts.

(05 Mar 2000)