Model of human excretory system shows the structures of the retroperitoneal cavity which includes: descending aorta, inferior vena cava, renal veins and arteries, ureter, urinary bladder cut open to show trigone and other structures, adrenal glands, both kidneys, iliacal vessels and prostate gland.
Left kidney and left adrenal gland in section.
Model also shows testis and in section.
The model has anatomical details that make it a great teaching aid.