mechanism of digestion of food in long answer
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In the human digestive system, food enters the mouth and mechanical digestion of the food starts by the action of mastication (chewing), a form of mechanical digestion, and the wetting contact of saliva. ... Gastric juice in the stomach starts protein digestion. Gastric juice mainly contains hydrochloric acid and pepsin.
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buccal cavity
oesophagus
stomach
small intestine
large intestine
rectum
anus
Explanation:
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