bodys response to stress

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  • Created by: Ailbhe
  • Created on: 06-03-14 08:53
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  • body's response to stress
    • stress is a biological and psychological response
      • experienced on encountering a threat that we feel we do not have resources to deal with
      • a stressor is the stimulus that causes stress e.g. exam
      • sudden and severe stress produces
        • increase in heart rate
        • increase in breathing rate
        • decrease in digestive activity
        • liver released glucose for energy
    • S.A.M
      • acute (immediate) response to stress
      • higher brain areas (coretext) detect and perceive something as a stress
      • triggering the Hypothalamus which activates the sympathetic brain of the autnomioc nervous system
        • adrenal medulla produces two hormones adrenaline and noradrenaline (fight or flight response)
    • H.P.A
      • Chronic (long term) response to stress
        • higher brain areas detect and perceive something as a stressor
          • triggering the Hypothalamus releasing CRF activating the pituitary gland
            • then releasing A.C.T.H. releasing corticosteroids which case the liver to realse glycogen
              • in the long term corticosteroids can suppress the immune system

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