what is peristalsis?
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the involuntary constriction and relaxation of the muscles of the intestine or another canal, creating wave-like movements that push the contents of the canal forward.
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Answer.........
peristalsis is a symmetrical wave like muscular contraction and relaxation that occur in tubular structures especially organs of digestive system such as oesophagus and instestines due to which ingested food is pushed through the digestive tract towards anus.
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