Medical Term:

node of Ranvier

Pronunciation: rahn-vē-ā′

Definition: 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

Hide
(web5)