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9 Terms
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Purpose
to break down food into nutrients that can be absorbed by the circulatory system, which take them to the parts of the body where they are needed.
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Four Stages Of Digestion
Ingestion, Digestion, Absorption, Egestion
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Ingestion
Take Food In
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Digestion
Breakdown of food into molecules
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Absorption
taking digested molecules into cells of the digestive tract
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Egestion
removal of waste from the body
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Mechanical digestion
This involves the breakdown of food particles into smaller pieces using the teeth, tongue, and stomach. Is a physical change.
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Chemical digestion
Involves the use of enzymes. is a chemical change.
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Human Digestion
Digest food along a difestive tract called the alimentary canal, which is a one way flow complete with a mouth and anus, and food encounters specialized areas along the way for digestion.