The food and liquid must be converted into forms that the body can use as nourishment. What we eat and drink is broken down into small molecules that are absorbed into the blood to nourish cells. The process is carried out in the digestive system, which includes the mouth, esophagus, small intestine (or small bowel), and large intestine (colon or large bowel). The liver and pancreas produce digestive chemicals or juices important for digestion.
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