The Gallstone Anatomy Model is an anatomy model from 3B Scientific. This graphic gallstone model for patient education shows the anatomy of the biliary system and its surroundings in half natural size. Both acute inflammation (cholecystitis) and the tissue changes caused by chronic inflammation can be identified in the gallbladder wall. Gallstones can be found in the following typical locations: * In the fundus area of the gall bladder * In the area of the spiral valve * In the area of the common bile duct * In the papillary opening to the small intestine Gallstone model mounted on base. The Gallstone Model is 5.5 x 3.9 x 7.5 in and weighs 0.44 lbs.