The document provides an overview of the human digestive system and the process of digestion. It describes each part of the digestive tract from the mouth to the anus. Food enters the mouth and is broken down through chewing and saliva. It then moves to the stomach through the esophagus and is further broken down by gastric juices. Nutrients are absorbed in the small intestine before waste is passed to the large intestine, where water is reabsorbed and waste is formed into feces to be excreted from the anus.
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