KINE 1020 Lecture Notes - Glucocorticoid, Homeostasis, Negative Feedback
27 Sep 2013
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Document Summary
Stress: non-specific response of the body to any demand made upon it , stress is important in life. Distress: death of a close friend, feeling overwhelmed. Eustress: going out on a date, getting a promotion. Having no stress hormones causes illness: addison"s disease. Increases heart rate and breathing rate: hypothalamic pituitary adrenal (hpa) axis. Stress response-1: nervous system response to stress- the locus coreuleus. Increases arousal and vigilance, and modulates the action of the autonomic nervous system. Regulates blood flow, heart rate, blood pressure, and respiration. Shuts down the gastrointestinal and sexual systems until the crisis is over: the limbic system and the hpa. Sets emotional tone stores emotional memories modulates motivation controls appetite and sleep cycles modulates libido. Lecture # 6: stress activates the hpa. Classical neuroendocrine system that responds to stress and whose final product, cortiscosteriods, targets components of the limbic system, mainly the hippocampus. Hpa axis is activate during time of stress.
