Answers

2016-04-26T13:34:38+05:30
Peristalsis is a radially symmetrical contraction and relaxation of muscles that propagates in a wave down a tube, in an anterograde direction.This movement helps in the movement of food through the alimentary canal..
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2016-04-26T13:36:38+05:30
the rhythmic contractions and relaxations in the alimentary canal which pushes the food down is called peristaltic movement or  peristalsis
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