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Homeostasis: The Foundation of Physiology Chapter 1
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Physiology is the study of body functions. There are two processes to explain body functions. They are: teleological - Or WHY--this explanations are in terms of meeting a bodily need. mechanistic - Or HOW--this explanations are in terms of cause and effect sequences. The body is viewed as a machine. Both processes, for example, can be applied to body shivering.
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The body parts are organized into a whole functional unit. Its levels of organization are represented in this hierarchy, lowest to highest: atom (smallest, most specific) body system molecule cell tissue organ organism (the whole body)
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1 2 3 4 5 6 1 2 3 4 5 6 Chemical level Cellular level Organ level Tissue level Body system level Organism level
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The cell is the basic unit of life. Basic cell functions are: obtain food and oxygen perform chemical reactions (make energy) eliminate carbon dioxide and wastes synthesize proteins and cell components
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view.php - Homeostasis: The Foundation of Physiology...

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