What is neurilemma and axolemma?

Plasma membrane around the nerve cell is called axolemma. Neurilemma is the plasma membrane of Schwann cells that surrounds the myelinated nerve fibers of peripheral nervous system and is absent in the central nervous system due to the lack of myelin sheath due to absence of Schwann cells.

Where is the perineurium located?

The perineurium connects to the pia-arachnoid at the proximal end of the nerve trunk. In sensory nerves the perineurium extends over the dorsal root ganglion, forming the inner layers of its capsule (Fig. 3-6). There is an extensive meshwork of tight junctions in this location similar to that seen in the nerve trunk.

What is a Neurolemmocyte?

Any of the cells that surround the axons of the peripheral nerves, forming the myelin sheath of myelinated nerve fibers and providing support for nonmyelinated nerve fibers. Also called neurilemma.

What is the difference between endoneurium perineurium and epineurium?

Endoneurium is outer most connective tissue covering of a neuron… Perineurium is outer connective tissue covering of neuron bundle or fasiculi… Epineurium is outer most connective tissue covering of whole nerve..

Are there blood vessels in endoneurium?

The blood vessels that enter the endoneurium and those that supply the outer epineurium and perineurium are all abnormal in diabetic patients. The majority of studies have focused on the ultrastructure of endoneurial vessels, and the consistent changes include thickening or reduplication of the basal lamina (Fig.

What is called oligodendrocyte?

Oligodendrocytes are the myelinating cells of the central nervous system (CNS). They are the end product of a cell lineage which has to undergo a complex and precisely timed program of proliferation, migration, differentiation, and myelination to finally produce the insulating sheath of axons.

How do you pronounce perineurium?

noun, plural per·i·neu·ri·a [per-uh-noor-ee-uh, -nyoor-]. Anatomy.

What’s the difference between perineurium and epineurium?

Perineurium is outer connective tissue covering of neuron bundle or fasiculi… Epineurium is outer most connective tissue covering of whole nerve..