An air contrast barium enema is a test for your colon. These days, doctors don’t use it as often to look for colorectal cancer. Instead, it’s more common to get a colonoscopy, which can find ...

Dr. Soumekh gave a brief summary of the structure and function of the gastrointestinal (GI) tract: The esophagus is a long muscular tube with a top and bottom valve. Food moves from the mouth through ...

Peristalsis describes the involuntary wave of muscle contractions that happen naturally in your digestive tract. This automatic bodily function physically moves food and drink through your body ...