Stress- Chapter 3

Stress- Chapter 3 - Managing Your Stress Chapter Three...

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Managing Your Stress Chapter Three September 1, 2010
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What is Stress? The experience of a perceived threat (real or imagined) to someone’s wellbeing resulting from a series of physiological responses and adaptations Stressor Two types of stress
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What is Stress? Eustress – positive stress Opportunity for personal growth and satisfaction Example: getting married Distress – negative stress Can have negative effect on one’s health Example: financial problems
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The Body’s Response to Stress Fight or flight (Sir Walter Cannon) Surprised by sudden stressor Sudden burst of energy (i.e. being chased by a dog) Adrenal glands jump into action Glands secrete adrenaline and other hormones into bloodstream Causes increased heart rate, blood pressure and blood flow to muscles Sudden physiological changes allow for quick response to stressor; fight it or escape from it Basic human survival mechanism
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The Body’s Response to Stress The General Adaptation Syndrome (GAS) – Hans Selye (1936) Alarm Perspire more Hearing ability increases More blood to the brain Digestive Resistance Exhaustion Homeostasis
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The Body’s Response to Stress cerebral cortex triggers Autonomic Nervous System (ANS) call to action Sympathetic Nervous System Prepares body to fight Hypothalamus --->adrenal glands ---> epinephrine (adrenaline) Hypothalamus --->pituitary gland ---> adrenocorticotropic hormone (ACTH)---> cortisol Parasympathetic Nervous System Slows internal systems stimulated by stress response
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The Body’s Response to Stress Resistance Phase Similar to Alarm phase but less intense Can be depleted and function less effectively
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