font size

Definition of Sympathetic nervous system

Sympathetic nervous system: A part of the nervous system that serves to accelerate the heart rate, constrict blood vessels, and raise blood pressure. The sympathetic nervous system and the parasympathetic nervous system constitute the autonomic nervous system, the branch of the nervous system that performs involuntary functions.

Source: MedTerms™ Medical Dictionary
http://www.medterms.com/script/main/art.asp?articlekey=5607
Last Editorial Review: 3/26/1998 2:28:00 PM

Drug Medical Dictionary of Terms by Letter

Top RxList Drug News


WebMD Daily

Get breaking medical news.