endoneurium


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Related to endoneurium: perineurium

endoneurium

 [en″do-noor´e-um]
the interstitial connective tissue in a peripheral nerve, separating individual nerve fibers. Called also Henle's sheath and connective tissue sheath of Key and Retzius. adj., adj endoneu´rial.

en·do·neu·ri·um

(en'dō-nū'rē-ŭm), [TA]
The innermost connective tissue supportive structure of nerve trunks, surrounding individual myelinated and unmyelinated nerve fibers; consists principally of ground substance, collagen, and fibroblasts; with the perineurium and epineurium, composes the peripheral nerve stroma.
[endo- + G. neuron, nerve]

endoneurium

/en·do·neu·ri·um/ (-noor´e-um) the innermost layer of connective tissue in a peripheral nerve, forming an interstitial layer around each individual fiber outside the neurilemma.endoneu´rial

en·do·neu·ri·um

(en'dō-nūr'ē-ŭm) [TA]
The innermost connective tissue supportive structure present in peripheral nerve trunks, found within the fascicles. With the perineurium and epineurium, the endoneurium comprises the peripheral nerve stroma.
Synonym(s): Henle sheath.
[endo- + G. neuron, nerve]

endoneurium

The CONNECTIVE TISSUE surrounding individual nerve fibres.

Henle,

Friedrich Gustar Jacob, German anatomist, pathologist, and histologist, 1809-1885.
crypts of Henle - infoldings of conjunctiva.
Hassall-Henle bodies - see under Hassall
Henle ampulla - the dilation of the ductus deferens where it approaches its contralateral partner before it is joined by the duct of the seminal vesicle. Synonym(s): ampulla of ductus deferens
Henle ansa - Synonym(s): nephronic loop
Henle fenestrated elastic membrane - Synonym(s): elastic laminae of arteries
Henle fiber layer - the layer of inner cone fibers in the central area of the retina.
Henle fissures - minute spaces filled with connective tissue between the muscular fasciculi of the heart.
Henle glands - accessory lacrimal glands. Synonym(s): Baumgarten glands
Henle layer - the outer layer cells of the inner root sheath of the hair follicle.
Henle ligament
Henle loop - Synonym(s): nephronic loop
Henle membrane - the transparent inner layer of the choroid in contact with the pigmented layer of the retina. Synonym(s): lamina basalis choroideae
Henle nervous layer - the layer of the retina from the outer plexiform to the nerve fiber layer inclusive. Synonym(s): entoretina
Henle reaction - dark brown staining of the medullary cells of the adrenal bodies when treated with the salts of chromium, the cortical cells remaining unstained.
Henle sheath - the delicate connective tissue enveloping individual nerve fibers within a peripheral nerve. Synonym(s): endoneurium
Henle sphincter
Henle spine - small bony prominence anterior to the supramastoid pit at the posterosuperior margin of the bony external acoustic meatus. Synonym(s): suprameatal spine
Henle tubules - the straight portions of the uriniferous tubules that form Henle loop, distinguished as the descending and ascending tubules of Henle.
Henle warts - Synonym(s): Hassall-Henle bodies

Key,

Ernst A.H., Swedish anatomist and physician, 1832-1901.
foramen of Key-Retzius - one of the two lateral openings of the fourth ventricle into the subarachnoid space at the cerebellopontine angle. Synonym(s): lateral aperture of the fourth ventricle
Key-Retzius corpuscles - tactile corpuscles, resembling pacinian corpuscles, found in the beak of certain aquatic birds.
sheath of Key and Retzius - the delicate connective tissue enveloping individual nerve fibers within a peripheral nerve. Synonym(s): endoneurium

endoneurium

connective tissue layer enveloping individual nerve fibres within a peripheral nerve

endoneurium

the interstitial connective tissue in a peripheral nerve, separating individual nerve fibers.
References in periodicals archive ?
24], among other variables, evaluated the effect of climb stairs resistance exercise, with an inclination of 80 degrees on Wistar rats sciatic nerve regeneration, starting after two weeks of injury and extending for 5 weeks after injury, using overhead that reached 250 grams at the end of treatment, and found that even with the stimulus of exercise regenerated fibers had thinner myelin sheath and larger spaces within the endoneurium.
They also noted that the DAX, DNF, and TMS in injured and treated animals were lower compared to the control (did only exercise) as well as in this study and explain that regenerated fibers with a small diameter are commonly found after peripheral nerve injury and are associated with withdrawal terminal connections during regeneration, and increased collagen, however with retraction of endoneurium.
According to our observations the nerve bundles are constituted by thick and thin nerve fibers enveloped by collagen fibers of endoneurium.
Capillaries are only found in the endoneurium and function as an extension of the bloodbrain barrier.
Sunderland Type 2 injuries occur only to the axon, whereas Type 3 and 4 damage the endoneurium and perineurium, respectively.
The endoneurium, a loose connective tissue, is the fourth layer surrounding the neurites.
The myelin and endoneurium left behind are phagocytized by cells involved in the inflammatory response.
5,7] CD34 is also expressed on vascular endothelium and vascular tumors, DICs, endoneurium, stromal tumors of the gastrointestinal tract, solitary fibrous tumors, epithelioid sarcomas, dermatofibrosarcoma protuberans, and some peripheral nerve sheath tumors.
It has been observed that in tuberculoid leprosy, T cells breach the perineurium, and destruction of Schwann cells and axons may be evident, resulting in fibrosis of the epineurium, replacement of the endoneurium with epitheliod granulomas, and occasionally caseous necrosis.
binding to endothelial cells, entry into endothelium, exit from endothelial cells into the endoneurium, and binding to Schwann cells--and the likelihood of developing new types of medical intervention is increased.