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A bolus is a rounded mass of food that is formed in the mouth after chewing and mixed with saliva. It is then swallowed and travels down the esophagus to the stomach.
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Peristalsis: Involuntary muscle contractions that move food along the digestive tract.
Esophagus: A muscular tube connecting the throat (pharynx) with the stomach.
Amylase: An enzyme found in saliva that helps break down carbohydrates into simpler sugars.