Science, asked by hemantchawda9, 2 months ago

define paristalsis with help of digram

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Answered by Anonymous

1

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There is a primary peristaltic wave, which occurs when the bolus enters the esophagus during swallowing. The primary peristaltic wave forces the bolus down the esophagus and into the stomach in a wave lasting about 8–9 seconds. ... The process of peristalsis is controlled by the medulla oblongata.

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