Fight Or Flight AO1

• Fight or flight response


  A REFLEX response to STRESSFUL Situations
• Fight or flight response

  • Stimulated by the HYPOTHALAMUS in the brain
  • Stimulates the SYMPATHETIC branch of the AUTONOMIC NERVOUS SYSTEM
• Fight or flight response

  1. Stimulates the AORENAL MEDULLA to release ADRENALINE into the bloodstream

  2. Releases NORADRENALINE

  3. Speeds up heart rate and breathing

  4. Dilates pupils

  5. Constricts blood vessels

  6. Raises blood pressure

  7. Inhibits saliva production (dry mouth)

  8. Causes Sweating

  9. Directs blood away from the skin, kidneys + digestive system

  10. Increases blood to the BRAIN and EFFECTORS
• After the stressful situation passes


  The parasympathetic nervous system takes over and reverses these changes (rest + digest)