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Q.

Deglutition is 

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a

swallowing of bolus

b

excretion of faeces

c

chewing of food

d

absorption of chyme

answer is A.

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Detailed Solution

Mucus in saliva helps in lubricating and adhering the masticated food particles into a bolus. The bolus is then conveyed into the pharynx and then into the oesophagus by swallowing or deglutition. The bolus further passes down through the oesophagus by successive waves of muscular contractions called peristalsis.

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