lecture 4 - Psych 101 Lecture 4 October 7 2008 The...

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Psych 101 Lecture 4 October 7, 2008 The physiology of stress and disease I. Autonomic Nervous system A. Sympathetic Nervous System (mobilizing) 1. Four F’s a. Fight b. Flight c. Fright d. Sex B. Parasympathetic Nervous system (after sympathetic usually, calms you down) 1. Mediates calm vegetative activities 2. Everything but the Four F’s -Growth -Energy Storage -Repair II. Stress Response A. Stress Response: collection of physiological and behavioral responses that help to reestablish homeostasis. 1. Nonspecific response; many stressors illicit similar stress response. 2. 2 interrelated systems are involved. a. Sympathetic adrenomedullary (SAM) system -Short-lived energy b. Hypothalamic pituitary adrenocortical (HPA) axis -Anti-inflammatory -Helps prevent you from bleeding to death. B. Vasopressin 1. Increases blood volume and blood pressure a. Retains water 2. Makes delivery of blood to muscles efficient 3. Involved in release of ACTH from ant. Pituitary C. Prolactin (ant. Pituitary) 1. Suppresses reproduction temporarily D. Glucagon (pancreas)
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