4.2 STRUCTURE AND FUNCTION OF KIDNEY
The kidneys are located at the back of the abdominal cavity, one on each side of the vertebral column. The concave side of the kidney faces the vertebral column. The kidney receives blood from the dorsal aorta via renal arteries and the renal veins return blood to the inferior vena cava. At the centre of the concave surface is a depression called hilus, where the renal artery, renal vein and the nerves are connected to kidney.