Human kidney system with connected arterial network

The illustration depicts a stylized human renal system. Two reddish-brown, bean-shaped kidneys are connected by a network of red and blue tubular structures, representing arteries and veins. The red vessels branch from a larger, yellowish vessel. The kidneys themselves feature lighter-colored, concave regions, likely representing the renal hilum where vessels and the ureter connect. The overall shape of the kidneys and their vascular connections are simplified for clarity.