NatureofStress

NatureofStress - Can you make yourself sick? Chapter 11:...

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“Can you make yourself sick?” Chapter 11: The Nature of Stress Stress: the psycho-physiological reaction to a perceived threat o Often identified as the fight-or-flight response Stress and the Body o Hans Selye (1956) o Environmental stressors such as heat, cold, toxins, and danger disrupt the body’s equilibrium o The body, then, has to “mobilize” to fight off the stressors and return the body to normal functioning o The General Adaptation Syndrome Alarm Phase Resistance Phase Exhaustion Phase o Alarm Phase: Shock Countershock Body mobilizes resources for the fight or flight o Resistance Phase: The body establishes resistance If the stress continues, resistance eventually begins to decline o Exhaustion Phase: Resistance is depleted leading to exhaustion At this point an organ system will be compromised Stress and the Immune System o Hypothalamus-pituitary-adrenal (HPA) axis o If they continue, cortisol and other stress hormones, which provide the
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This note was uploaded on 03/11/2011 for the course PSYCH 001 taught by Professor Benbassi during the Spring '08 term at GWU.

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NatureofStress - Can you make yourself sick? Chapter 11:...

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