<P> Myelin is a fatty white substance that surrounds the axon of some nerve cells , forming an electrically insulating layer . It is essential for the proper functioning of the nervous system . It is an outgrowth of a type of glial cell . </P>
<P> Myelin is a fatty white substance that surrounds the axon of some nerve cells , forming an electrically insulating layer . It is essential for the proper functioning of the nervous system . It is an outgrowth of a type of glial cell . </P>
where is the myelin sheath located on a neuron
where is the myelin sheath located on a neuron
the axon
the axon