One quarter of the total ~blood~ output from the |heart| comes to the |kidneys| along the |renal artery|. Two ~renal~ arteries arise from the abdominal section of the |aorta|, each |artery| supplies a |lobe| of the |kidney|. The incoming |artery| divides into four or five branches, eventually forming |arterioles|, each of which leads to the compact ball of |capillaries| called the |glomerulus|.
