PowerPoint Presentation - STRESS RESPONSE

							STRESS RESPONSE
              STRESS x 2
• Acute Stress (Eustress)
  – alarm reaction
  – recovery follows quickly
  – may save your life
• Chronic Stress (Distress)
  – constant/repeated stress
  – no recovery
  – impairs immune response/general health
   Stages of Stress Response
1. Behavioral
  -ascertain stimuli--visual, tactile, olfactory
             Stages cont.
2. Autonomic
  -EPI release (adrenaline)
  -increase responses
  -inhibit unnecessary functions
              Stages Cont.
4. Endocrine
  - Aldosterone release
      *water retention for increase BP
  - Cortisol release
      *glucose production
      *protein catabolism
      *increase vessel sensitivity
      *reinforce autonomic response
      *decrease inflammation response
                Stages cont.
5. Exhaustion
  – Body is at depleted state
  – Must rest in order to recover
  – If stress continues without recovery or
    exhaustion =
    • illness
    • perpetuation of illness
    • death
   What systems are working?
• H-P-A-A
  – Hypothalamic-Pituitary Adrenal Axis
  – Stimulates release of hormones from adrenal
    cortex (medulla for nervous system rxn)
• Secondary organs stimulated
  – Thyroid-increase metabolism
  – Liver-increase triglyceride catabolism
  – ***mobilize energy stores
           Stress Paradox
• stress can be the thing that pushes the
  body into overt disease
• stress resets homeostasis in body and
  must recover or exhaust to return to
  original homeostatic levels
• added stress of disease perpetuates the
  illness by further weakening the immune
  system