Described as a long tube stretching from the stomach to the anus, the intestines are in charge of absorbing nutrients and water from food. It is comprised of the small intestine, large intestine and rectum.
As long as 20 feet when uncoiled, with a 1-inch diameter, the small intestine (or small bowel) absorbs the bulk of nutrients from food, by then digested by the stomach. Next to the small intestine is the large intestine, also known as the large bowel or colon. Measuring 5 feet in length, two inches wider than the small intestine, the large intestine saps water from the materials in the small intestine. Consequently, the colon forms the stool, which is ejected out of the rectum.