Food can move through the oesophagus even when a person is lying horizontally because of:

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A garvity
B peristalsis
C emulsification
D None of the above

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Answer: B. peristalsis

Peristalsis is a series of wave-like, involuntary muscular contractions and relaxations that push food downward through the digestive tract.

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Food can move through the oesophagus even when a person is lying horizontally because of:

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