What is cross section of a kidney?

The cross-section of a kidney resembles the shape of a bean, hence often referred to as the "kidney bean-shaped" organ. It measures approximately 10-12 cm in length and 5-6 cm in width, and weighs around 150-200 grams. The kidney has a distinctive pattern consisting of two distinct zones: the outer cortex and the inner medulla. The cortex is a granular, reddish-brown outer layer and contains several nephrons, the functional units of the kidney. The medulla, which appears lighter in color, is the inner layer that contains the renal pyramids and collects urine that is passed from the nephrons. The renal pelvis is a funnel-shaped structure located at the center of the kidney, which collects urine from the medulla and passes it to the ureter for excretion out of the body. Blood vessels, including the renal artery and vein, run through the center of the kidney and are responsible for providing oxygen and nutrients to the kidney tissue.