The Body's response to stress

Summary of page 134-135 AS Complete Companion, Third Edition Student Book by Mike Cardwell and Cara Flanagan

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  • Created by: ClaryFray
  • Created on: 24-02-15 17:21
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  • The Body's response to stress
    • Acutes stressors arouse the Autonomic Nervous System (ANS)
      • Divided into the SYMPATHETIC BRANCH
        • Sympathetic nervous system or SNS releases Noradrenaline
          • Prepares body for fight or flight. Increased heart rate, breathing rate, digestion ceases
            • Once stressor has passed parasympathetic branch activated
              • And the PARASYMPATHETIC BRANCH which relaxes the body. Slows heartbeat down, reduces blood pressure etc.
        • Sympathetic Adrenal Medullary System (SAM) releases adrenaline
          • Prepares body for fight or flight. Increased heart rate, breathing rate, digestion ceases
            • Once stressor has passed parasympathetic branch activated
              • And the PARASYMPATHETIC BRANCH which relaxes the body. Slows heartbeat down, reduces blood pressure etc.
    • Pituitary-adrenal system (HPA)occur in response to chronic stressors.
      • Stressors perceived by Hypothalamus which releases CRF
        • This activates the pituitary Gland and causes it to release ACTH

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