HLSC 1F90 Lecture Notes - Lecture 7: Stress (Biology), Sympathetic Nervous System, Autonomic Nervous System
22 Nov 2016
School
Department
Course
Professor
Document Summary
The general physiological and emotional state that happens due to the stress response. The individual"s own thoughts and perceptions determine whether a demand, situation or events stressful. The same demand, situation or event may evoke different levels of stress for different individuals. The physical and emotional reactions to the stressor is known as the stress response. I. e. demands, situations or events trigger physical & emotional reaction that are subjectively perceived to be stressful. Whether the stress comes froms positive or negative stressors, a consistent, physiological response occurs in the human body general adaptation. The mind can identify between positive and negative, body can"t. Gas general adaptation syndrome conventional way of thinking of stress. Gas: involves 3 progressive stages: stage 1: alarm. Characterized by almost instantaneous physical changes (fight/ flight) response (hormonal, cardiovascular, metabolic & other changes) Alarm stage activates the autonomic nervous system (ans) Ans is comprised of the parasympathetic and sympathetic systems.
