Ranvier node


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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.

Ranvier node

(ron-ve-a')
[Louis A. Ranvier, Fr. pathologist, 1835–1922]
A space between adjacent Schwann cells along a nerve fiber; no myelin sheath is present. Synonym: neurofibril node
See: nerve fiber; neuron for illus.; Schwann cell

Ranvier node

see node of Ranvier.