MYELIN

Myelin

Myelin is a dielectric material that forms a layer, the myelin sheath, usually around only the axon of a neuron. It is essential for the proper functioning of the nervous system. It is an outgrowth of a type of glial cell. The production of the myelin sheath is called myelination. In humans, the production of myelin begins in the 14th week of fetal development, although little myelin exists in the brain at the time of birth. During infancy, myelination occurs quickly and continues through the adolescent stages of life.

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myelin

Noun

  1. A white, fatty material, composed of lipids and lipoproteins, that surrounds the axons of nerves.


The above text is a snippet from Wiktionary: myelin
and as such is available under the Creative Commons Attribution/Share-Alike License.

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