Kidney structure - image description

This diagram shows the structure of the kidney in cross section. On top of the kidney is a small gland called the adrenal gland. A layer of fat surrounds the kidney and the adrenal gland. This fat layer is enclosed by a covering called the capsule.

The inside of the kidney is made up of an outer area called the cortex and an inner area called the medulla. The medulla is split up into pyramid shaped sections. Urine made in the kidney leaves it through a tube called the ureter.

Blood is carried into the kidney through a large vessel called the renal artery. Blood leaves the kidney through a large vessel called the renal vein or (vena cava).

There are groups of bean shaped structures called lymph nodes close to the kidney and the blood vessels going in to it.