stresshealth

stresshealth - Psychology 101 Health Psychology The Stress...

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1 Psychology 101 Health Psychology Professor David Sherman Class # 4 The Stress Response Acute Physical Stressors Chronic Psychological Stressors Overview of Stress Response 1. Autonomic nervous system – Sympathetic nervous system is activated Fight or flight response activated Release of catecholamines Mobilize energy in body to prepare to act – Parasympathetic nervous system suppressed Calm, vegetative activity suppressed 2. Hypothalamic Pituitary Adrenocortical axis (HPA or PAC) – General adaptation syndrome – Release of corticosteroids (e.g., cortisol) Are all stressors equal? In terms of HPA activation, some types of short-term stressors lead to a larger cortisol response: – uncontrollable stressors – stressors that threaten one’s self-esteem or social status: self-evaluative threats What does stress do to your body? • Mobilizes energy: Fatigue; Diabetes • Raises heart rate/blood pressure • Slows digestion • Slows growth • Slows reproduction • Blunts pain • Suppresses immune system What does stress do to your body? Mobilizes energy • Energy needs to be usable form, not stored in fat cells • Simplest fats and proteins leave fat cells, liver, muscles and move to muscles needed to get away from threat Health Problems: • Fatigue--no energy stored • Diabetes--cells stop responding to insulin because of constant mobilization of energy
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2 What does stress do to your body? • Mobilizes energy
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stresshealth - Psychology 101 Health Psychology The Stress...

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