In the digestive tract, peristalsis makes the solid and liquid components to move along within the tube-like compositions of the digestive tracts.
It is the contraction of muscles in the digestive and urinary tracts. It is a specific, wave-like kind of the contraction of muscle as its objective is to move the liquids or solids along within the tube-like compositions of the digestive and urinary tracts.
It is an involuntary muscle movement, which cannot be controlled. The smooth muscles, which takes part in peristalsis function when they are instigated to do so. In the digestive tract, peristalsis begins in the esophagus. Post swallowing of the food, it is moved down the esophagus via peristalsis. Further the process is continued by the muscles in the stomach, large intestine, and small intestine.
Thus, peristalsis makes the movement of foods through the muscles of the digestive tract and the food is digested and broken down as it moves down.
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