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Unformatted text preview: Well, why doesn’t the camel
just sweat to cool off?” A camel can’t choose to sweat any more that people can choose to. Our
physiological functions are determined by our genetics. Our genes code for sweat glands in the skin. A
camel’s do not.
• Students may think of homeostasis as keeping conditions in the body exactly the same. In fact, homeostasis
usually keeps our internal environment within a particular ideal range. Our body temperature, for example,
changes throughout the day. It may drop low while we sleep, or may be high during exercise.
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