The digestion that begins in the mouth by the action of the teeth and tongue is called:

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Mechanical digestion refers to the physical breakdown of food into smaller pieces, which begins in the mouth through the action of the teeth and tongue. Peristalsis refers to the involuntary muscular contractions that push food through the rest of the digestive tract. Chemical digestion refers to the breakdown of food molecules using enzymes and other chemicals, which primarily occurs in the stomach and small intestine. Elimination refers to the process of removing waste products from the body, which occurs through the rectum and anus.

The Digestion That Begins in the Mouth by the Action