Internodal segment

Internodal segment
Diagram of longitudinal sections of medullated nerve fibers.
Medullated nerve fibers stained with silver nitrate.
Details
Part of	Axon of nerve fiber
System	Nervous system
Identifiers
Latin	segmentum internodale
TH	H2.00.06.2.03028
Anatomical terms of microanatomy [edit on Wikidata]

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

References

This article incorporates text in the public domain from page 727 of the 20th edition of Gray's Anatomy (1918)

External links

Nervous tissue

CNS

Tissue Types

Grey matter
White matter
- Projection fibers
- Association fiber
- Commissural fiber
- Lemniscus
- Nerve tract
- Decussation
Neuropil
Meninges

Cell Types

Neuronal	Pyramidal Purkinje Granule Spindle Medium spiny Interneuron
Glial	Astrocyte Ependymal cells Tanycyte Microglia Oligodendrocyte Oligodendrocyte progenitor cell

PNS

General	Dorsal Root Ganglion Ramus Ventral Root Ramus Ramus communicans Gray White Autonomic ganglion (Preganglionic nerve fibers Postganglionic nerve fibers) Nerve fascicle Funiculus
Connective tissues	Epineurium Perineurium Endoneurium
Neuroglia	Myelination: Schwann cell Neurilemma Myelin incisure Node of Ranvier Internodal segment Satellite glial cell

Neurons/
nerve fibers

Parts

Soma	Axon hillock
Axon	Telodendron Axon terminals Axoplasm Axolemma Neurofibril/neurofilament
Dendrite	Nissl body Dendritic spine Apical dendrite/Basal dendrite

Types

Afferent nerve fiber/
Sensory neuron

Efferent nerve fiber/
Motor neuron

Termination

Synapse	Electrical synapse/Gap junction Chemical synapse Synaptic vesicle Active zone Postsynaptic density Autapse Ribbon synapse Neuromuscular junction
Sensory receptors	Meissner's corpuscle Merkel nerve ending Pacinian corpuscle Ruffini ending Muscle spindle Free nerve ending Nociceptor Olfactory receptor neuron Photoreceptor cell Hair cell Taste receptor