Asked by: Stephania Adonievasked in category: General Last Updated: 25th January, 2020
What is one function of the myelin sheath?
Consequently, how does the myelin sheath work?
The Myelin Sheath of a neuron consists of fat-containing cells that insulate the axon from electrical activity. This insulation acts to increase the rate of transmission of signals. A gap exists between each myelin sheath cell along the axon.
One may also ask, what are the biochemical nature and function of the myelin sheath? Myelin is composed of multiple concentric layers of glial plasma membrane (oligodendrocytes in the CNS, Schwann cells in the PNS) wrapped around axons. The purpose of myelination is to increase axonal conduction velocity. Axons are myelinated in short segments that are interrupted by microscopic nodes of Ranvier.
In this way, what is the myelin sheath?
n. The insulating envelope of myelin that surrounds the core of a nerve fiber or axon and that facilitates the transmission of nerve impulses, formed from the cell membrane of the Schwann cell in the peripheral nervous system and from oligodendroglia cells.
What makes up the myelin sheath?
Myelin is made by two different types of support cells. In the central nervous system (CNS) — the brain and spinal cord — cells called oligodendrocytes wrap their branch-like extensions around axons to create a myelin sheath. In the nerves outside of the spinal cord, Schwann cells produce myelin.