parasympathetic nervous system

Definitions of parasympathetic nervous system
  1. noun
    originates in the brain stem and lower part of the spinal cord; opposes physiological effects of the sympathetic nervous system: stimulates digestive secretions; slows the heart; constricts the pupils; dilates blood vessels
    synonyms: parasympathetic
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    type of:
    nervous system, systema nervosum
    the sensory and control apparatus consisting of a network of nerve cells
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