#nervous_system__nervoussystem__systema_nervosum__systemanervosum  the sensory and control apparatus consisting of a network of nerve cells
  supertype:  system.body_part  a group of physiologically or anatomically related organs or parts; "the body has a system of organs for digestion"
  part:  nervous_tissue  ganglion  nerve_cell  fiber_bundle  central_nervous_system  neural_network  peripheral_nervous_system  autonomic_nervous_system
  part of:  body [49,49]
  subtype:  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
  subtype:  parasympathetic_nervous_system__parasympatheticnervoussystem__parasympathetic  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

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