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Question

Peristalsis occurs in:

A
Urethra
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B
Trachea
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C
Blood vessels
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D
Alimentary canal
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Solution

The correct option is B Alimentary canal
The process of peristalsis begins in the oesophagus when a bolus of food is swallowed. The strong wave-like motions of the smooth muscles in the oesophagus carry the food to the stomach, where it is churned into a liquid mixture called chyme. The movement of food in the alimentary canal occurs through peristalsis.
Hence the correct answer is (D)

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