parasympathetic nervous system
parasympathetic nervous system
nounDefinition of PARASYMPATHETIC NERVOUS SYSTEM
: the part of the autonomic nervous system that contains chiefly cholinergic fibers, that tends to induce secretion, to increase the tone and contractility of smooth muscle, and to slow heart rate, and that consists of a cranial and a sacral part — compare sympathetic nervous system
See First Known Use of PARASYMPATHETIC NERVOUS SYSTEM
circa 1934
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