ANATOMY

Detailed explanation-1: -Each renal artery enters a kidney at a site called the renal hilum. This area is the entry and exit point for vessels and nerves that feed into the kidneys. From there, the artery branches into smaller blood vessels throughout the kidney.

Detailed explanation-2: -The hilum is the concave part of the bean-shape where blood vessels and nerves enter and exit the kidney; it is also the point of exit for the ureters.

Detailed explanation-3: -Ureters, blood vessels, lymph vessels, and nerves enter and leave at the renal hilum. The renal arteries arise directly from the aorta, and the renal veins drain directly into the inferior vena cava.

Detailed explanation-4: -Blood flows into your kidney through the renal artery. This large blood vessel branches into smaller and smaller blood vessels until the blood reaches the nephrons. In the nephron, your blood is filtered by the tiny blood vessels of the glomeruli and then flows out of your kidney through the renal vein.