What is (are) Whipple Disease ?
The small intestine is part of the upper gastrointestinal (GI) tract and is a tube-shaped organ between the stomach and large intestine. The upper GI tract also includes the mouth, esophagus, stomach, and duodenum, or the first part of the small intestine.
                
Most food digestion and nutrient absorption take place in the small intestine. The small intestine measures about 20 feet long and includes the duodenum, jejunum, and ileum. Villitiny, fingerlike protrusionsline the inside of the small intestine. Villi normally let nutrients from food be absorbed through the walls of the small intestine into the bloodstream.