nodes of Ranvier


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nodes of Ranvier

Narrow gaps between the ends of the segments of myelin that insulate single nerve axons. (Louis Antoine Ranvier, 1835–1922, French pathologist).

nodes of Ranvier

see MYELIN SHEATH.

Ranvier,

Louis A., French pathologist, 1835-1922.
nodes of Ranvier - short intervals in the myelin sheaths of nerve fibers.
Ranvier crosses - black or brown figures in the shape of a cross, marking Ranvier nodes in the longitudinal section of a nerve stained with silver nitrate.
Ranvier disks - tactile nerve endings of cupped disklike form in the skin. Synonym(s): Ranvier tactile disks
Ranvier membrane
Ranvier plexus - a subbasal stroma plexus of the cornea.
Ranvier segment - the portion of a myelinated nerve fiber between two successive nodes. Synonym(s): internodal segment
Ranvier tactile disks - Synonym(s): Ranvier disks
References in periodicals archive ?
(2004) [beta]IV spectrins are essential for membrane stability and the molecular organization of nodes of Ranvier. J.
(2006) Glial regulation of the axonal membrane at nodes of Ranvier. Curr.
Researchers have long recognized the need for lab-grown motor nerve cells that myelinate and form nodes of Ranvier in order to use controlled lab conditions to zero in on the causes of demyelination.
Moreover, the nodes of Ranvier of the regenerated axons myelinated by the transplanted cells express the appropriate sodium channel (Nav1.6).
Development of nodes of Ranvier. Curr Opin Neurobiol.
Sodium channel Na(v)1.6 is localized at nodes of Ranvier, dendrites, and synapses.
Conduction in a normally myelinated nerve is made possible by the presence of sodium channels primarily located at the nodes of Ranvier (Fig 1).
channel pattern in their peripheral nervous system, where myelin is intact, is normal, and the sodium channels are, as expected, concentrated at the nodes of Ranvier, while in the central system the channels are not localized at the nodes but randomly scattered.