Parasympathetic Nervous System Definition
părə-sĭmpə-thĕtĭk
noun
The part of the autonomic nervous system originating in the brain stem and the lower part of the spinal cord that, in general, inhibits or opposes the physiological effects of the sympathetic nervous system, as in tending to stimulate digestive secretions, slow the heart, constrict the pupils, and dilate blood vessels.
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Synonyms:
Other Word Forms of Parasympathetic Nervous System
Noun
Singular:
parasympathetic nervous system
Plural:
parasympathetic nervous systems
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