The nervous system includes the brain, the spinal cord, and all the nerves in the body. Nerves carry information through the spinal cord to the brain about what is happening inside and outside of the body, and the brain processes the information and sends messages back through the nerves that control how muscles and other organs respond.
The nervous system is divided into the brain and the spinal cord (which are together known as the central nervous system) and the nerve cells that lead away from the brain and the spinal cord to the rest of the body (peripheral nervous system). The nervous system controls:
Last Revised: September 1, 2011
Author: Healthwise Staff
Medical Review: William H. Blahd, Jr., MD, FACEP - Emergency Medicine & H. Michael O'Connor, MD - Emergency Medicine
To learn more visit Healthwise.org
© 1995-2012 Healthwise, Incorporated. Healthwise, Healthwise for every health decision, and the Healthwise logo are trademarks of Healthwise, Incorporated.