After every meal, the intestines perform an action called peristalsis—moving food through their hollow interiors with coordinated contractions and relaxations of the smooth muscle. For more than a ...

It was the ancient Greeks who first divided the 20-foot length of the small intestine into three parts: The duodenum, the jejunum and the ileum. However, the organ may finally be ready for an update: ...

Much of the food you eat is absorbed by your digestive system, which includes your stomach and your intestines. But some of what you eat makes it all the way through those twists and turns and comes ...