MEDICAL PHYSIOLOGY

Detailed explanation-1: -The hilum is located at the resulting medial depression that leads into a hollow chamber called the renal sinus, which contains blood vessels, nerves, lymphatic vessels, and the proximal ureter.

Detailed explanation-2: -A medial depression in the kidney leads to a hollow renal sinus into which blood vessels, nerves, lymphatic vessels, and the ureter enter. 2. Inside the renal sinus lies a renal pelvis that is subdivided into major and minor calyces; small renal papillae project into each minor calyx.

Detailed explanation-3: -The renal sinus is a central spacious cavity formed by the extension of the perinephric space into the deep recess located at the medial border of the kidney (, Figs 1, , 2). The renal sinus is surrounded by the kidney parenchyma laterally.