node of Ranvier


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Related to node of Ranvier: action potential, axon, myelin sheath, synapse

node of Ran·vi·er

(rahn-vē-ā'),
a short interval in the myelin sheath of a nerve fiber, occurring between each two successive segments of the myelin sheath; at the node, the axon is invested only by short, fingerlike cytoplasmic processes of the two neighboring Schwann cells or, in the central nervous system, oligodendroglia cells.
See also: myelin sheath.

node of Ranvier

(rän′vyā, rän-vyā′, räN-)
n. pl. nodes of Ranvier
A constriction in the myelin sheath, occurring at varying intervals along the length of a nerve fiber.

Ran·vi·er node

(rahn-vē-ā' nōd)
A short interval in the myelin sheath of a nerve fiber, occurring between segments of the myelin sheath; at the node, the axon is invested only by short, fingerlike cytoplasmic processes of the two neighboring Schwann cells or, in the centralnervous system, oligodendroglia cells.
See also: myelin sheath
Synonym(s): node of Ranvier.