Homeostasis and Endocrine System - Introductory Human Physiology

Jul 24th, 2016
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Duke University
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HUMAN PHYSIOLOGY -Homeostasis and Fluid Compartments - Learning Objectives - Explain the basic organization of the body - Define the fluid compartments of the body - Explain how solutes distribute in the body - Explain homeostasis - Explain mass balance - ...

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IntroductoryHumanPhysiologyHomeostasis and EndocrineSystemChapter 1body, its specific function is protective. So it forms a barrier to the outside worldand keeps some of the inside materials sort of organized. The skin is a veryimportant barrier for the loss of water, so it's a hydrophobic barrier. So it allows thebody to retain water even though we have conditions where we would normallybecome dehydrated.HUMAN PHYSIOLOGYHomeostasis and Fluid CompartmentsLearning ObjectivesThe second of the organs that we need to deal with then are organs that are goingto overcome the barrier of the skin. And that is organs that allow us to have entryinto the body, for instance the respiratory system which allows entry of oxygen andthe expulsion of CO2. So we have gases then that can come in and out of the body.And we have the GI tract, or the gastrointestinal tract, which allows food ornutrients to enter into the body, and then solid waste to be removed from thebody. We also have transport systems, and the transport system is predominantlythe cardiovascular system. The cardiovascular system, it takes the nutrients that areentering from the GI tract and delivers it to all of the cells. It takes the gases whichare coming in from the lung, the respiratory system, and delivers that to all of thetissues and organs of the body.This is done by bulk flow, and we'll talk about thiswhen we get to the cardiovascular system. But this is moving materials through aseries of v

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