HSCI 130 Lecture Notes - Lecture 17: Hans Selye, Tachycardia, Cortisol Awakening Response
16 Jun 2016
School
Department
Course
Professor
Document Summary
Universally, there is no accepted definition of stress. Hans selye, studies biological effects of stressful stimuli: general adaptation syndrome (gas): 3 phases. Body recognizes stressor so it goes into a state of alarm. Body feels exhausted because resources are depleted. Body is unable to function properly: youre gonna get ideas, keep track of those ideas, 5 years later some of those ideas will come back to you in different ways, stick with your guts. Sam system (sympathetic-adrenal-medullary) & 4 consequences: increase secretion of epinephrine (adrenaline) and norepinephrine ( stress hormone , increase heart rate and blood pressure, sweating, restricted blood vessels, suppressed cellular immune function. Increased heart rate and blood pressure: variations in heart rhythm (sudden death, neurochemical imbalances. Hpa (hypothalamus-pituitary-adrenal) & 3 consequences: anterior pituitary release acth (stimulate production of cortisol, acth gets the cortex to produce cortisol and other glucorticoids, cognitive decline in pathogenic processes. Insulin resistance sugar level gets too high.
