endoneurium

(redirected from sheath of Key and Retzius)
Also found in: Dictionary, Thesaurus, Legal, Encyclopedia.

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.