FLOWCHART- what happens to the body when it is under stress? (acute and chronic)

A flowchart showing how the HYPOTHALAMUS deals with acute and chronic stress 

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  • Stressor
    • Hypothalamus
      • PRODUCES
        • Corticotrophin releasing factors (CRF)
          • Pituitary gland produces adrenocorticotrophic hormone (ACTH)
            • released into the bloodstream...
              • ACTH reaches adrenal gland
                • The adrenal cortex produces cortisol (stabilises blood glucose levels and reduces wound healing by suppressing immune system.
                  • Stressor disappears
                    • Hypothalamus and pituitary gland stop producing CRF and ACTH
                      • CHRONIC STRESS RESPONSE (PITUITARY ADRENAL SYSTEM RESPONDS AFTER A FEW HOURS EXPOSED TO THE STRESSOR)
      • ACTIVATES
        • Sympathetic Nervous System
          • Raises the bodies arousal (Heart Rate and Respiration Increases)
            • Sympathetic Nerves supplying the adrenal medulla
              • Adrenal Medulla releases adrenaline and nor-adrenaline into the bloodstream
                • Activates the Fight or Flight response (Boosts supply of oxygen and glucose to the brain and muscles and reduces activity in the digestive system)
                  • Serge of energy, pupils widen, sweat, heart pounds, muscles tense and tremble, use up energy.
                    • Stressor disappears
                      • Parasympathetic Nervous System returns body back to normal
                        • ACUTE STRESS RESPONSE (SYMPATHOMEDULLARY PATHWAY RESPONDS IMMEDIATELY TO SHORT-TERM STRESS)

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