Which process propels food through human the alimentary canal ?
Peristalsis
Food moves along the alimentary canal by rhythmic, wave-like contractions and relaxations of the smooth muscles in the wall of the gut. This movement is called peristalsis.
Mastication is chewing in the mouth, deglutition is the act of swallowing, and segmentation is mainly a mixing movement in the small intestine; none of these propels food along the whole canal.
Peristalsis starts in the oesophagus and continues through the stomach and intestines.
Hence, Peristalsis.
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