The digestive system is made up of a series of hollow organs that connect to form a digestive tract from the mouth to the anus.
Food digestion starts in your mouth and then goes through your esophagus, stomach, small intestine, large intestine, colon, and rectum. Two other organs, the liver and the pancreas, contribute important digestive juices.
The purpose of the digestive system is to break down the foods eaten into molecules tiny enough to be absorbed by your circulatory system. These molecules can then supply your body with nutrients and energy.
The upper parts of the system concentrate on digestion, and the lower parts on waste removal.
Waste from indigestible parts of food moves through the large intestine into the rectum and is then eliminated as a bowel movement.
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