Internodal segment

From Wikipedia, the free encyclopedia

Internodal segment
Diagram of longitudinal sections of medullated nerve fibers.
Medullated nerve fibers stained with silver nitrate.
Latin	segmentum internodale
Gray's	subject #183 727
Dorlands/Elsevier	s_07/12727330

The portion of nerve fiber between two Nodes of Ranvier is called an internodal segment (or internode). The neurolemma or primitive sheath is not interrupted at the nodes, but passes over them as a continuous membrane.

[edit] External links

• Dictionary at eMedicine internodal+segment
• GPnotebook -476446662

This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant.

Nervous tissue - edit

Neurons (gray matter): soma, axon (axon hillock, axoplasm, axolemma, neurofibril/neurofilament), dendrite (Nissl body, dendritic spine) types (bipolar, pseudounipolar, multipolar, pyramidal, Purkinje, Renshaw, granule) Synapses: neuropil, boutons, synaptic vesicle, neuromuscular junction, electrical synapse Sensory receptors: Free nerve ending, Meissner's corpuscle, Merkel nerve ending, Muscle spindle, Pacinian corpuscle, Ruffini ending, Olfactory receptor neuron, Photoreceptor, Hair cell, Taste bud Glial cells: astrocyte, ependymal cells, microglia, radial glia Myelination (white matter): Schwann cell, oligodendrocyte, nodes of Ranvier, internode, Schmidt-Lanterman incisures, neurolemma closely related Connective tissue: epineurium, perineurium, endoneurium, nerve fascicle, meninges