sympathetic nervous system
Noun
Meaning
sympathetic nervous system (plural sympathetic nervous systems)
(neuroanatomy) The part of the autonomic nervous system that raises blood pressure and heart rate, constricts blood vessels, and dilates the pupils when under stress.
Synonyms
Hypernyms
Related terms
Examples
A car can massage organs which no masseur can reach. It is the one remedy for the disorders of the great sympathetic nervous system. ... The craving for opium can be endured in a car.
A car can massage organs which no masseur can reach. It is the one remedy for the disorders of the great sympathetic nervous system.
At low doses it acts through the sympathetic nervous system to increase heart muscle contraction force and heart rate, thereby increasing cardiac output and blood pressure.
In addition, NINDS-supported scientists are studying how signals of the sympathetic nervous system cause pain in CRPS patients.
Splanchnic nerves of the sympathetic nervous system innervate the medulla of the adrenal gland.
The dependence on the vagal effect means digitalis is not effective when a patient has a high sympathetic nervous system drive, which is the case with acutely ill persons, and also during exercise.