Q. The rhythmic contraction of the lining of muscles of canal to push the food along the gut is called _____:
Answer: Peristalsis
Notes: Peristalsis is the wave of rhythmical contraction, which takes place in the alimentary canal. It is produced by involuntary contraction of circular muscles, which is preceded by a simultaneous contraction of the longitudinal muscle, and relaxation of the circular muscle lining the gut. Peristalsis pushes the food through the alimentary canal.