Write the whole process of digestion in human body class vii
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1. PROPULSION: peristaltic waves move food from one part to the other.
2.GRINDING: the most vigorous peristalsis and mixing action occurs close to the pylorus.
3.RETROPULSION: small amount of chyme is pushed into the duodeum,simutaneously forcing most of it back into the stomach.
4.As the process of digestion in the stomach near completion, the contraction of the stomach decrease
5.this prompts the opening of the pyloric sphincter and opens the pathway into duodenum realsing the partially food( chyme) in small quantities into the duodenum.
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