The Autonomic Nervous System

  1. One of the two main divisions of the autonomic nervous system, the sympathetic nervous system's primary process is to stimulate the body's fight-or-flight response.

  2. Structure of Met-enkephalin

    Schema of the sympathetic nervous system, showing the sympathetic ganglia and the parts of the body they connect to.

  3. The parasympathetic nervous system's primary process is responsible for stimulation of 'rest-and-digest' or 'feed and breed' activities that occur when the body is at rest.