SMALL INTESTINE, X-RAY. SMALL INTESTINE, X-RAY The small intesine is a segment of the digestive tract measuring about 7 meters long from the gastric pylorus to the large intestine. The small intestine is divided into three structural parts, the duodenum, the jejunum and the ileum, which form 15 intestinal loops. These loops float freely in the abdominal cavity. The inner surface of the small intestine is covered with villi where food is absorbed. Here is a normal x-ray of the small intestine