ANATOMY

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: -A series of normal coordinated, rhythmic muscle contractions, that occurs automatically to move food through the digestive tract is called peristalsis.

Detailed explanation-3: -Muscularis propria (externa): smooth muscle layer. These layers of smooth muscle are used for peristalsis (rhythmic waves of contraction), to move food down through the gut.

Detailed explanation-4: -Peristalsis is the automatic wave-like movement of the muscles that line your gastrointestinal tract.

Detailed explanation-5: -In much of a digestive tract such as the human gastrointestinal tract, smooth muscle tissue contracts in sequence to produce a peristaltic wave, which propels a ball of food (called a bolus before being transformed into chyme in the stomach) along the tract.