Central nervous system and peripheral nervous system:

The central nervous system is comprised of the brain and spinal cord. The peripheral nervous system includes all peripheral nerves.
- Reviewed last on: 9/11/2008
- Sean O. Stitham, MD, private practice in Internal Medicine, Seattle, Washington; and Daniel B. Hoch, PhD, MD, Assistant Professor of Neurology, Harvard Medical School, Department of Neurology, Massachusetts General Hospital. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.