Gray and white matter of the brain

Gray matter in the brain and spinal cord is called substantia grisea. Gray matter is made up of cell bodies. White matter, also called substantia alba, is composed of nerve fibers.

Review Date: 03/10/2011
Reviewed By: Harvey Simon, MD, Editor-in-Chief, Associate Professor of Medicine, Harvard Medical School; Physician, Massachusetts General Hospital.

A.D.A.M., Inc. is accredited by URAC, also known as the American Accreditation HealthCare Commission (www.urac.org).

---

---