STRESS FEAR AND THE FIGHT OR FLIGHT RESPONSE by MikeJenny

VIEWS: 82 PAGES: 13

									  STRESS, FEAR, AND THE
FIGHT OR FLIGHT RESPONSE
FIGHT OR FLIGHT OVERVIEW

                            AMYGDALA



                           HYPOTHALAMUS



                       PITUITARY GLAND


                           ADRENAL GLAND


                       THROUGHOUT BODY
THE HYPOTHALAMUS AND THE
    PITUITARY GLAND
INSIDE THE
PITUITARY GLAND
 THE BRAIN




• Incoming info into Thalamus
• Signal sent to Amygdila
    (decodes emotions)
• Transmitted to Hypothalamus
    (Responds by initiation F or F)
• Hypo. sends nerve impulse down spine
• Hypo. activates Pituitary gland
     (Releases Hormone – ACTH)
THE ADRENAL GLAND AND INSIDE
EPINEPHRINE SPREADS
 THROUGH THE BODY
THE BODY




•   Nerve impulse from Hypo./ ACTH both reach Adrenal
•   Nerve impulse signals chromofin cells – Epinephrine
•   ACTH signals cells to produce Cortisol
•   Both chemicals released from Adrenal gland
•   Cortisol raises blood sugar (Frees fatty acids)
•   Epinephrine reaches liver (Increases glucose
    production – more potential energy – ATP)
    – Reaches lungs (relaxes muscles/increases respiration
      (more O2 for muscles)
    – Reaches Heart (Beats faster – circulates energy faster)
FIGHT OR FLIGHT OVERVIEW
                           Brain receives/sends
                           signals to pituitary




                           Pituitary releases
                           messengers to Adrenal




                       Adrenal produces
                       Epinephrine and Cortisol




                           Cortisol frees fatty
                           acids/raises sugar

                           Adrenaline increases
                           resp. allows more
                           o2/energy (ATP)
WHAT IS FEAR?
              PATHS OF FEAR

               Thalamus - decides where to send incoming
               sensory data (from eyes, ears, mouth, skin)

               Sensory cortex - interprets sensory data

               Hippocampus - stores and retrieves conscious
               memories; processes sets of stimuli to establish
               context

               Amygdala - decodes emotions; determines
               possible threat; stores fear memories

               Hypothalamus - activates "fight or flight"
               response




TEXT FROM http://health.howstuffworks.com/mental-health/human-nature/other-emotions/fear.h
SO WHAT DOES THIS
RESPONSE LOOK LIKE?




• Increase Heart rate
• Pupils dilate (take in light)
• Veins in skin tighten – allow flow
  to major muscles (chills – less blood in skin)
• Muscles tense (goose bumps)
• Focus on immediate
ACTIVITY: Play the fight or flight game


http://cmhc.utexas.edu/stressrecess/Level_One/fof.html

								
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