HLSC 1F90 Lecture Notes - Lecture 19: Sympathetic Nervous System, Parasympathetic Nervous System, Autonomic Nervous System
2 Mar 2016
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Document Summary
Stress: an externally imposed factors that makes demand on individual"s mind or body: the mental and physical responses of the mind and body to these demands. The individual"s own thoughts and perceptions determine whether a demand/ situation / event is stressful. The same a demand/ situation/ event may evoke different levels of stress for different individuals. Stressors: the physical, social, or mental demands/ situations/ events that evoke stress by forcing the individual to respond and adapt. Negative stress: distress ( eg: illness, death) Stress level rise to successful coping to return to homeostasis. Homoeostasis to stressor to inability to reduce to increase curve to exhaustion ( crash down) Characterised by surprise / anxiety arising from a stressor. Regulates body function such as heart rate, respiration , glandular functions. Comprised of the sympathetic nervous system and parasympathetic nervous system. Hypothalamus stimulates adrenal glands to release epinephrine ( aka.
