Stress Response

Card Set Information

Author:
lunarii27
ID:
293523
Filename:
Stress Response
Updated:
2015-01-21 19:56:57
Tags:
Cell adaptation pathophysiology
Folders:
Pathophysiology
Description:
Hormones released during stress response
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  1. Stress stimulates this gland, with this response
    Hypothalamus:  stimulates SNS, adrenal medulla, releases corticotropin releasing hormone (CRH)
  2. Effect of release of CRH
    • Posterior pituitary stimulated to release antidiuretic hormone (ADH)
    • Anterior pituitary stimulated to release adrenocorticotropin hormone (ACTH)
  3. Effect on body of ADH and aldosterone release
    • Increased blood volume
    • Increased BP
    • Increased HR
    • Decreased urine output
    • Jugular vein distention (JVD)
  4. Effect of ACTH release
    Adrenal cortex stimulated to release glucocorticoid (cortisol) and mineralocorticoids (aldosterone)
  5. Effect on body of cortisol release
    • Increased blood glucose (gluconeogenesis & glycogynolysis)
    • Decreased immune response (lymphocytes)
    • Decreased allergic response (eosinophils)
  6. Effect of adrenal medulla stimulation
    Catecholamine (epinephrine & norepinephrine) released
  7. Effect on body of epinephrine & norepinephrine release
    • Increased:  BP, HR, cardiac output, systemic vascular resistance (SVR), blood glucose, mental alertness, blood flow to muscles
    • Decreased:  blood to gut, peristalsis (contracts rectum)
    • Pupils dilate, respiration deepens, dry mouth, urinary retention, relaxes bladder

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