The Nervous System

• The central nervous system

  The brain and spinal cord

  Process and interprets sensory information from the sense organs
• Peripheral nervous system

  All the nerves that don't form the central nervous system

  Includes sensory and motor neurons

  Can be subdivided into the somatic and automatic
• Somatic nervous system within the peripheral nervous system


  Includes all sensory and motor nerve cells connecting to skeletal muscles

  Voluntary
• Automatic nervous system within the peripheral nervous system


  Includes motor neurons connecting to internal organs

  Involuntary and automatic

  Can be divided into sympathetic and parasympathetic

  Sympathetic is when we need a sudden burst of energy eg: fight, flight or freeze

  Parasympathetic reverses sympathetic to calm us down and return body to normal