STRESS RESPONSE

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STRESS RESPONSE
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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

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Stages of Stress Response

• 1. Behavioral
• -ascertain stimuli--visual, tactile, olfactory

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Stages cont.

• 2. Autonomic
• -EPI release (adrenaline)
• -increase responses
• -inhibit unnecessary functions

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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

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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

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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

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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

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