Define peristalsis (1 mark)
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Peristalsis is a series of wave-like contractions of the muscles that are involved in the food movement and in the movement of other liquid particles in the digestive tract to various processing organs that are located in the digestive system.”
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the involuntary constriction and relaxation of the muscles of intestine ot another canal producing a wave that pushes the the content of the canal forward
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