Endoneurium

Endoneurium
Transverse section of human tibial nerve.
Nerve structure
Gray's	subject #183 728
MeSH	Endoneurium
Dorlands/Elsevier	e_09/12332510

The nerve fibers are held together and supported within the funiculus by delicate connective tissue, called the endoneurium.

It is continuous with septa which pass inward from the innermost layer of the perineurium, and shows a ground substance in which are imbedded fine bundles of fibrous connective tissue, primarily collagen, running for the most part longitudinally.

It serves to support capillary vessels, arranged so as to form a net-work with elongated meshes.

It is found in other places too, such as surrounding the Schwann cells on the peripheral side of the transitional zone on the auditory nerve.^[1]

References

1. ^ Fraher JP (2000). "The transitional zone and CNS regeneration". J. Anat. 196 ( Pt 1): 137-58. PMID 10697296.

External links

• Endoneurium at eMedicine Dictionary
• Histology at BU 21301loa - "Ultrastructure of the Cell: myelinated axon and Schwann cell"
• Histology at BU 21401loa - "Ultrastructure of the Cell: arteriole and peripheral nerve"
• Histology at OU 1_03
• Histology at University of California, Los Angeles
• Diagram at Howard University

Histology: nervous tissue
Neurons (gray matter)	soma, axon (axon hillock, axoplasm, axolemma, neurofibril/neurofilament), dendrite (Nissl body, dendritic spine, apical dendrite, basal dendrite) types (bipolar, pseudounipolar, multipolar, pyramidal, Purkinje, granule)
Afferent nerve/Sensory nerve/Sensory neuron	GSA, GVA, SSA, SVA, fibers (Ia, Ib or Golgi, II or Aβ, III or Aδ or fast pain, IV or C or slow pain)
Efferent nerve/Motor nerve/Motor neuron	GSE, GVE, SVE, Upper motor neuron, Lower motor neuron (α motorneuron, γ motorneuron)
Synapses	neuropil, synaptic vesicle, neuromuscular junction, electrical synapse - Interneuron (Renshaw)
Sensory receptors	Free nerve ending, Meissner's corpuscle, Merkel nerve ending, Muscle spindle, Pacinian corpuscle, Ruffini ending, Olfactory receptor neuron, Photoreceptor cell, Hair cell, Taste bud
Glial cells	astrocyte, oligodendrocyte, ependymal cells, microglia, radial glia
Myelination (white matter)	Schwann cell, oligodendrocyte, nodes of Ranvier, internode, Schmidt-Lanterman incisures, neurolemma
Related connective tissues	epineurium, perineurium, endoneurium, nerve fascicle, meninges