(n) [peri-, around + stalsis, contraction] a progressive wavelike movement that occurs in hollow tubes of the body (such as the esophagus and the intestines) by the involuntary contraction of smooth muscles within the tube walls
movement of the esophagus, induced by swallowing, in which waves of alternate circular contraction and relaxation propel the contents (bollus) onward. The act of peristalsis utilizes up to 50 pairs of muscles, and takes from 17-23 seconds to complete
A wave-like movement that travels along some of the hollow tubes in the body, such as the digestive tract. It is brought about by the coordinated contraction and relaxation of muscles in the walls of the hollow tubes, and serves to move material through the tubes in a specific direction. It is an involuntary (subconscious) process.
The rolling motion of smooth muscle that moves food along the alimentary canal. Includes the passage from the esophagus to the stomach, the churning action of the stomach, and the passage through the small intestine.
the major means of propulsion in moving food along the digestive tract. Consists of a series of alternating contractions and relaxations of smooth muscle that lines the walls of the digestive organs and that forces food to move forward.
Contraction of the muscles in the digestive system in a wavelike fashion, such that foodstuff is moved down from the mouth and through the stomach and intestinal tract for elimination through the rectum. Motility disorders typically cause abnormalities with paristalsis.
rhythmic muscle movements that force food in the esophagus from the throat into the stomach. Peristalsis is involuntary - you cannot control it. It is also what allows you to eat and drink while upside-down.
Involuntary contractions of the smooth muscles in the walls of the esophagus, stomach, and intestines that propel food along the digestive tract. Waves of muscle contraction in the esophagus that propel food from the oral cavity to the stomach. PICTURE
Synchronized or coordinated contraction of the muscles that propel food content through the gastrointestinal (GI) tract to facilitate normal digestion and the absorption of nutrients. Peristalsis is dependent upon the coordination between the muscles, nerves, and hormones in the digestive tract.
a series of involuntary muscular contractions that form a wave-like motion to propel food through the esophagus to the stomach. This same process is used by the intestines to propel digested food and waste.
The movement or wave of contractions and relaxation of the tube by which the contents are propelled onward. A worm like progression of alternate contraction and relaxation of the muscle fibers of the ureter, which propels urine down the ureter into the bladder.