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: -Esophagus. After you swallow, peristalsis pushes the food down your esophagus into your stomach. Stomach. Glands in your stomach lining make stomach acid and enzymes that break down food.

Detailed explanation-3: -The oesophagus is the muscular tube that carries food from the mouth to the stomach after it is swallowed. A ring of muscle at the end of the oesophagus relaxes to let food into the stomach and contracts to prevent stomach contents from escaping back up the oesophagus.

Detailed explanation-4: -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: -Reverse peristalsis can move food backward all the way from your small intestine back through your stomach, esophagus and mouth. It can also occur on a smaller scale during food’s normal journey through the digestive tract if that journey encounters an obstruction along the way.