Myelin sheathDefinition (http://en.wikipedia.org/wiki/Myelin_sheath) Myelin is a dielectric (electrically insulating) 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. (Wikipedia) Preferred Units: N/A Scope Note: N/A This term is used for the following terms: N/A Approved Date 04-Apr-2013 Click here to give feedback on this term or suggest an update. |