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Write a brief note on physical and mechanical digestion. |
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Answer» In physical and mechanical digestion, the food is broken down to smaller pieces. Mastication occurs in the mouth and the buccal cavity. Deglutition is common process in the pharynx and the oesophagus. Peristalsis occurs in oesophagus, stomach and colon. Swallowing is done in pharynx and movement of food mass is seen in every part of the alimentary canal. Churning movement is produced in stomach, as well as in intestine. |
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