neurolemma

/ ˌnjʊərəʊˈlɛmə /

noun

1. Also: neurilemma. the thin membrane that forms a sheath around nerve fibres

Word History and Origins

Origin of neurolemma¹

C19: New Latin, from _neuro- + Greek eilēma covering

Example Sentences

Between the neurolemma and the axis cylinder is the medullated sheath, composed of a fatty substance known as myelin.

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The axis cylinder is the essential conducting structure of the nerve, while the neurolemma and the myelin act as insulating agents.

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Each nerve fibre consists of a number of nerve fibrils collected into a central bundle—the axis cylinder—which is surrounded by an envelope, the neurolemma or sheath of Schwann.

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This medullated sheath is interrupted at the nodes of Ranvier, and in each internode is a nucleus lying between the myelin and the neurolemma.

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