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Related Terms:
sympatholytic
sympathotropic
antisympathetic
sympathetic
sympathicotonia
parasympathetic nervous system
presympathetic
sympathoadrenal
autonomic nervous system
perisympathetic
sympathovagal
dibenamine
oculosympathetic
fight or flight
heart rate
betamimetic
sympathectomy
pupil
blood pressure
sympathoinhibitory
horner's syndrome
parasympathetic
vagosympathetic
sympathetic hyperactivity
vestibulosympathetic
sympatholysis
sympathoinhibition
blood vessel
sympatho
sympathoexcitation
sympathomimetic
Definitions:
Noun
sympathetic nervous system
Definition: originates in the thoracic regions of the spinal cord; opposes physiological effects of the parasympathetic: reduces digestive secretions; speeds the heart; contracts blood vessels
Definition: The part of the autonomic nervous system that raises blood pressure and heart rate, constricts blood vessels, and dilates the pupils when under stress.