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The signs of the alarm reaction reappear but now they are irreversible. Hans Selye a medical doctor and researcher. General Adaptation Syndrome Stages Phases Model Sanesco The second stage of the general adaptation syndrome is marked by a rapid increase in the intensity of the bodys response to a stressor. . If adaptation occurred genotypes remaining at the end of the experiment should outcompete their ancestors at 37C and at 42C. Hans Selye MD PhD 1907 - 1982 the Father of Stress was a Hungarian endocrinologist and the first to give a scientific explanation for biological stress. Selye went on to identify three distinct stages of general adaptation syndrome the initial alarm reaction stage which occurs shortly after the stressful event followed by a resistance stage during which bodys Autonomic Nervous System ANS resists the impact of the stressful stimulus and finally if the stress continues the exhaustion stage when the body fails to co...

A increased sympathetic stimulation b elevated levels of epinephrine c vasodilation d irregularities in the vessel walls caused by plaques e factors that cause increased hematocrit. Irregularities in the vessel walls caused by plaques. A P 2 Unit 2 Chapter 20 Homework Flashcards Quizlet Each factor increases the constriction of arteries. . These factors include parasympathetic stimulation elevated or decreased potassium ion levels decreased calcium levels anoxia and acidosis. These factors include autonomic activity pharmacologic agents and blood viscosity. The three factors that influence peripheral resistance are blood viscosity blood vessel length and blood vessel diameter. Three main sources of peripheral resistance. Viscosity of the blood is affected by. D elevated levels of epinephrine. Vessel Diameter Analogy Vessel diameter affects peripheral resistance. D irregularities in the vessel walls caused ...

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