From Sheryl Ankrom, former About.com Guide
Created: July 23, 2009
About.com Health's Disease and Condition content is reviewed by the Medical Review Board
The Sympathetic Nervous System is part of the autonomic nervous system that responds to danger. It is a kind of unconscious control system that causes physiological changes when danger is perceived, preparing one for a fight-or-flight stress response.
Learn how to save money on medications with these recommendations. More >
Keep yourself, and your family, happy and healthy this fall with these tips. More >
©2009 About.com, a part of The New York Times Company.
All rights reserved.
