EISCO human digestive system model shows nose, mouth cavity, pharynx, esophagus, the gastrointestinal tract, liver with gall bladder, pancreas, spleen, duodenum, and opened cecum and rectum. Transverse colon is removable. Hand painted model. 2 Parts. It is mounted on a base and numbered with a key card.. Grades 8-16. For age 13-21.