Stress Responses
- Created by: Toni Lowe
- Created on: 03-06-13 15:59
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- The Pituitary Adrenal System
- Higher brain centres detect and identify stressful situation (a stressor).
- A message is sent to the hypothalamus, which releases Corticotrophin Releasing Factors (CRF).
- This signals the pituitary gland to release ACTH.
- This travels round the body to the Adrenal Cortex, which detects the ACTH and releases corticosteroids into the bloodstream.
- This helps to release energy reserves that can be found in the liver and fat. It does this by increasing blood sugar level through the conversion of protein into glucose and making fats available for energy.
- This travels round the body to the Adrenal Cortex, which detects the ACTH and releases corticosteroids into the bloodstream.
- This signals the pituitary gland to release ACTH.
- A message is sent to the hypothalamus, which releases Corticotrophin Releasing Factors (CRF).
- Slower acting response to ongoing stressful situations (chronic stress).
- Higher brain centres detect and identify stressful situation (a stressor).
- The Sympathomedullary Pathway
- Higher brain centres detect and identify a stressful situation (a stressor).
- A message is sent to the hypothalamus, which activates the parasympathetic branch of the autonomic nervous system (ans).
- The adrenal medulla releases the stress hormones, adrenaline and noradrenaline.
- This induces a series of bodily changes that includes; increased heart rate and decreased digestion.
- Resolutely, the fight or flight response comes into action.
- This induces a series of bodily changes that includes; increased heart rate and decreased digestion.
- The adrenal medulla releases the stress hormones, adrenaline and noradrenaline.
- A message is sent to the hypothalamus, which activates the parasympathetic branch of the autonomic nervous system (ans).
- Short term, fast acting, that involves electrical activity (usually occurs in acute stress).
- Higher brain centres detect and identify a stressful situation (a stressor).
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