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What are some of the most important things to know about the digestive system?
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Some of the most important things to know about the digestive system include that it is made up of organs such as the mouth, esophagus, stomach, small intestine, large intestine, and rectum; that digestion begins in the mouth with chewing and continues through the gastrointestinal tract until nutrients are absorbed into the bloodstream; and that digestion involves breaking down food molecules into smaller pieces so they can be more easily absorbed.