Endoneurium

Endoneurium is a specific formation of the peripheral nervous system, located in the cords of peripheral nerves and providing nutrition and innervation to their smooth muscle elements. Examples of endoneurium include perineuric canals and perivascular tissue in the nervous system. In addition to their specialized function in the endoneuric peripheral nervous system, they are also found in cells constituting many of the most important endocrine centers of the peripheral sympathetic nervous system. Some authors classify vascular smooth muscles as endoneuruses, but this point of view is questionable.

The clinical significance of the endoneurium is very limited. Of certain clinical significance are the splanchnic (visceral), pericapsular and supraneural, very sensitive, chemoreceptors of the endoneurial processes of nerve cells. These latter, due to contact with blood capillaries