Case Study Homeostasis

Case Study Homeostasis - Case Study 1-Homeostasis 1 What is...

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Case Study # 1-Homeostasis 1. What is responsible for raising Jim's heart and respiratory rate and stimulating sweating just before the race? To answer this question I will discuss what happens to humans when we are subjected to the “fight or flight response”. In this manner we will understand what happened to Jim just before the race. Step #1 When we are exposed to stress this stimulates the release of extra hormones into the bloodstream like Adrenaline and Cortisol. Step #2 Adrenaline affects the sympathetic nervous system. The extra release of Adrenaline widens the blood vessels throughout the body by altering the muscle tone of blood vessels. When muscle tone in blood vessel walls relax, just below the skin , an increase of blood volume rushes to the skin. Step #3 This activates our sweat glands among other things. There are two types of sweat glands. a) Eccrine sweat gland-This gland is controlled by the hypothalamus and is open to bare skin throughout the body. b) Apocrine sweat gland- These glands are nestled in hair follicles in scalp , armpits , and groin area.These are the glands that respond to the extra Adrenaline in the body causing us to SWEAT.
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This note was uploaded on 10/19/2008 for the course BIO 201 IN taught by Professor Brooks during the Spring '08 term at Pima CC.

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Case Study Homeostasis - Case Study 1-Homeostasis 1 What is...

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