what is a peristalsis
Peristalsis. a wavelike contraction that propels the contents of tubular organs, for example, the intestine, stomach, and ureters, caudally in animals or in a downward direction in man.Peristalsis is the result of many coordinated contractions of the longitudinal and transverse muscles in the walls of a tubular organ.A single peristaltic wave takes the form of a circular constriction around the lumen that moves along the length of the organ.eristalsis is the result of many coordinated contractions of the longitudinal and transverse muscles in the walls of a tubular organ. A single peristaltic wave takes the form of a circular constriction around the lumen that moves along the length of the organ.