MedlinePlus Medical Encyclopedia: Central nervous system

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Central nervous system

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Illustrations	Definition

Illustrations

Vertebra and spinal nerves

Definition Return to top

The central nervous system is composed of the brain and spinal cord. Your brain and spinal cord serve as the main "processing center" for the entire nervous system, and control all the workings of your body.

Update Date: 5/21/2009

Updated by: David C. Dugdale, III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

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