AP BIOLOGY

Detailed explanation-1: -Peristalsis is the automatic wave-like movement of the muscles that line your gastrointestinal tract. Peristalsis moves food through your digestive system, beginning in your throat when you swallow and continuing through your esophagus, stomach and intestines while you digest.

Detailed explanation-2: -Overview. 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-3: -Peristalsis is a series of muscle contractions. These contractions occur in your digestive tract. Peristalsis is also seen in the tubes that connect the kidneys to the bladder. Peristalsis is an automatic and important process.

Detailed explanation-4: -Organ Systems Involved Gastrointestinal peristalsis involves the pharynx, esophagus, stomach, small intestine, large intestine, and rectum. The peristaltic movement of smooth muscle may also be found elsewhere throughout the body, including within the ureters, vas deferens, bile ducts, and glandular ducts.

Detailed explanation-5: -In the esophagus, peristaltic waves begin at the upper portion of the tube and travel the whole length, pushing food ahead of the wave into the stomach. Particles of food left behind in the esophagus initiate secondary peristaltic waves that remove leftover substances.