Where is the pancreas? Where is the duodenum? Where is the gallbladder? For gastroenterology patients, the 22x28 inch Diseases of the Digestive System chart illus­trates internal organs of the GI tract, including including stomach, duodenum, gallbladder, pancreas, liver, appendix, large and small intestines, colon, rectum and anus with plenty of detailed cutaway views. ©2016