Depicts the anatomy of the human urinary system and digestive system. The upper abdominal organs are attached in their natural anatomical positions and are removable from the kidneys. The front half of the kidney is removable to reveal the renal pelvis, renal calices, renal cortex, and renal medulla. The upper abdomen shows the duodenum (partially opened), gallbladder (partially opened), bile ducts (opened), pancreas (revealing large ducts) and the spleen and surrounding vessels in natural size.