These nerve cells are the communication system both indoors the central nervous system and between it and the rest of the body. Axons are sheathed in myelin, a white substance (hence the marches white matter) that insulates them and speeds transmission of impulses on the cell fibers. electric impulses move along the nerve fiber to the synapse (the connection localise between cells) to the next nerve cell. The lesions or plaques of multiple sc...If you need to get a full essay, raise it on our website: OrderEssay.net
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