The chewing of food by the teeth is the only example of mechanical digestion in the human digestive system.

Name: The chewing of food by the teeth is the only example of mechanical digestion in the human digestive system.
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Mechanical digestion also occurs in the stomach where the muscles contract to mix the food with digestive juices. Additionally, the churning of food by the small intestines also counts as mechanical digestion.

The Chewing of Food by the Teeth Is the Only