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| study of the functions and activities of body systems |
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| the usable parts of foods |
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| (in large complex multicellular organisms) takes place outside the body cells |
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| (in simple organisms) occurs in vacuoles inside the cell |
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| alimentary canal or gastrointestinal tract (GI) |
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| one-way-tube that begins in the moth and ends in anus |
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| contraction of alimentary canal |
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| mucus that moistens food making it easier to swallow |
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| starts chemical digestion of starches; found in saliva |
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| major energy sources for body activities |
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| connects mouth to stomach |
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| muscular j-shaped organ, mashes and churns food into "chyme" |
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| gastric juice & hydrochloric acid |
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| secreted by glands in stomach lining |
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| needed to build & repair body tissue |
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| each chemical digestive reaction requires a specific _________. |
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| wastes produced by cellular activities are removed by this |
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