dictionary help| nervous system, sympathetic | medical dictionary |
A part of the nervous system that accelerates the heart rate, constricts blood vessels, and raises blood pressure. The sympathetic nervous system together with the parasympathetic nervous system (that slows the heart rate, increases intestinal and gland activity, and relaxes sphincter muscles) constitute the autonomic nervous system.
(12 Dec 1998)
nervous system, autonomic, nervous system, parasympathetic, nervous system physiology < Prev | Next > nervous tissue, nervous tunic of eyeball, nervure
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