#sympathetic_nervous_system__sympatheticnervoussystem  originates in the thoracic regions of the spinal cord; opposes physiological effects of the parasympathetic: reduces digestive secretions; speeds the heart; contracts blood vessels
  supertype:  nervous_system__nervoussystem__systema_nervosum__systemanervosum  the sensory and control apparatus consisting of a network of nerve cells
  part:  splanchnic_nerve  solar_plexus  alpha_receptor  beta_receptor
  part of:  autonomic_nervous_system__autonomicnervoussystem__ANS  the part of the nervous system of vertebrates that controls involuntary actions of the smooth muscles and heart and glands
     part of:  nervous_system__nervoussystem__systema_nervosum__systemanervosum  the sensory and control apparatus consisting of a network of nerve cells
        part of:  body__organic_structure__organicstructure__physical_structure  the entire physical structure of an organism (especially an animal or human being); "he felt as if his whole body were on fire"

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