THORAX ABDOMEN AND PELVIS

Detailed explanation-1: -Peristalsis is a series of wave-like muscle contractions that move food through the digestive tract. It starts in the esophagus where strong wave-like motions of the smooth muscle move balls of swallowed food to the stomach.

Detailed explanation-2: -(payr-ih-STAL-sis) The rippling motion of muscles in the intestine or other tubular organs characterized by the alternate contraction and relaxation of the muscles that propel the contents onward.

Detailed explanation-3: -When food or fluids enter your GI tract, nerves trigger the muscles to initiate a series of wave-like contractions. These muscle contractions automatically move food and fluids forward until they reach their exit at your anus or urethra.

Detailed explanation-4: -Peristalsis in the digestive tract begins in the esophagus. After food is swallowed, it is moved down the esophagus by peristalsis. The muscles in the stomach, small intestine, and large intestine continue the process.