K22/3 Kidneys with Rear Organs of the Upper Abdomen - 3 PartKidneys with Rear Organs of the Upper Abdomen 3 Part This high quality Kidney model with rear organs of the upper abdomen model combines kidney models K22 1 and K22 2 depicting 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 model features many anatomical details of the kidneys and rear organs. Front half of Kidney is