peristalsis definition digestion
Tissues and Organs of the Digestive System. and about Diseases and Disorders of the Digestive System. Peristalsis is a wave-like movement (motion) that progresses along some of the hollow tubes of the body that have circular and longitudinal muscles, such as the intestines.Peristalsis happens involuntarily and is induced by distension of the walls of the tube.1  Immediately behind the distension the. .eristalsis is a wave-like movement (motion) that progresses along some of the hollow tubes of the body that have circular and longitudinal muscles, such as the intestines. Peristalsis happens involuntarily and is induced by distension of the walls of the tube. 1  Immediately behind the distension the. .