digestive system
The digestive system breaks down food into smaller pieces so the body can use the energy and nutrients. The process starts in the mouth, where food is chewed and mixed with saliva. From there, it travels down the esophagus (food pipe) to the stomach, a muscular bag that churns food with digestive juices. Next, food moves into the small intestine where it's absorbed into the blood with help from the liver and pancreas. The large intestine absorbs extra water from the remaining waste, which is then eliminated from the body through the anus.
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