Kinesiology 2276F/G Lecture Notes - Lecture 9: Stress (Biology), Substance Abuse, Caffeine

• School: Western University
• Department: Kinesiology
• Course: Kinesiology 2276F/G
• Professor: Craig Hall

Document Summary

*what we experience when we face challenges in our lives. Lack of social skills, shyness, insecurity, loneliness. How body responds to stress in a predictable way (3 steps) Arousal or alarm - initial reaction to stress, experience burst of energy. For males - fight or flight response. For females - tend and befriend response - adaptations to deal with crisis. Protect their offspring, more likely to try to make peace. Anxious, irritable, and vulnerable until stress is resolved. Stage of resistance - strain, worry, cynicism, difficulty sleeping. Stage of exhaustion - anxiety and depression. Is initiated when some real or perceived threat or challenge is encountered. Whether real or perceived, the brain responds the exact same way. Viscous cycle of stress (source: sapolsky, r (september 2003)) pg. Crh is a precursor to acth (adrenocorticotropic hormone) which stimulates the brain stem, which activates sympathetic nervous system.