1. [ adjective ] of or relating to the parasympathetic nervous system
Related terms: parasympathetic_nervous_system
2. [ noun ] (anatomy,zoology,physiology) 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_nervous_system
Related terms: nervous_system autonomic_nervous_system