Define peristalsis and explain it's significance
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Explanation:
Peristalsis is a wave-like motion which brings about the movement of food and liquid through muscle contractions. It is an involuntary action of the muscles and hence cannot be under one’s will. But, the muscles that are involved in peristalsis, the smooth muscles, function when they are triggered to do so.
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Peristalsis is the involuntary constriction and relaxation of the muscles of the intestine or another canal.
It's purpose is to move solids or liquids along within the tube-like structures of the digestive and urinary tracts.
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