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Graphical

Myelin membraneMembraneEndomembrane systemCell envelopeCell membrane

Definition

The myelin membrane is the white matter coating our nerves, enabling them to conduct impulses between the brain and other parts of the body. It consists of a layer of proteins packed between two layers of lipids. This specialized cell membrane is produced by oligodendrocytes in the central nervous system, and Schwann cells in the peripheral nervous system. Myelin sheaths wrap themselves around axons, the threadlike extensions of neurons that make up nerve fibers. Each oligodendrocyte can myelinate several axons. The major function of myelin is to increase the velocity of propagation of nerve impulses.

Synonyms

Myelin
Myelin sheath

Category

› Cellular component

GOi

myelin sheath [ GO:0043209 ]
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