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Brain
Brain
Gray and white matter of the brain
Gray and white matter of the brain
Overview

White matter of the brain

Information:

The white matter of the brain refers to the nerve cells under the cortex (grey matter). These nerve cells have extensive myelin that covers part of each cell. Myelin acts as an insulator, and it increases the speed of transmission of all nerve signals.



Review Date: 5/8/2003
Reviewed By: Elaine T. Kiriakopoulos, M.D., M.Sc., Department of Neurology, Beth Israel Deaconess Medical Center, Harvard University, Boston, MA. Review provided by VeriMed Healthcare Network.

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