The _____ is the region where structures enter and exit the kidney
The lateral surface is convex. The medial surface is concave, deeply grooved (renal sinus) and forms the renal hilum. The ureter/renal pelvis, renal artery, renal vein, lymphatic vessels and nerves enter or exit through the renal hilum the kidney.he kidneys are located in the retroperitoneum, right and left of the spine and below the diaphragm. Normal position: 1  Left kidney: from the 11th rib to third lumbar vertebra. 2  Right kidney: slightly lower position, 12th rib to the lower part of the third lumbar vertebra.