MICROANATOMY

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: -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.

Detailed explanation-3: -The renal hilum is a medial indentation on the concave border of the kidney, where the renal artery enters the kidney. The renal vein and the ureter also leave the kidney at the hilum. The renal capsule is a tough, fibrous innermost layer of supportive connective tissue surrounding the kidney.

Detailed explanation-4: -Each renal artery arises directly from the abdominal aorta and once it passes through the hilum, divides into a number of interlobar arteries, which supply each lobule of the kidney.