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what is white matter?
White matter makes up parts of the brain and spinal cord and facilitates communication between gray matter and the rest of the body. It can be found in inner layers of the cortex, optic nerves, and central and lower portions of the brain as well as the spinal cord.

White matter is made up primarily of axons of nerve cells and full of myelin, which is a whitish fatty material. It derives its name from its color appearance, which is white when exposed. It works with gray matter, a non-myelinated part of the brain responsible for sending sensory and motor stimulus to the central nervous system to create a response.


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