ANATOMY

Detailed explanation-1: -It is roughly bean-shaped with an indentation, called the hilum, on the medial side. The hilum leads to a large cavity, called the renal sinus, within the kidney. The ureter and renal vein leave the kidney, and the renal artery enters the kidney at the hilum.

Detailed explanation-2: -The medial indentation where the ureter emerges along with blood vessels, lymphatic vessels, and nerves is called the renal hilum. The renal hilum is the indentation found near the center of the open border where the ureter emerges from the kidney and the lymphatic vessels, nerves, and blood vessels.

Detailed explanation-3: -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-4: -On the medial side of a kidney is an indentation called the hilus or hilum, at which the renal artery enters and the renal vein and ureter emerge. Nephrons are the microscopic structural and functional units of the kidney.