9. Identify the blood vessel at tag #23. 10. Identify the blood vessel at tag #21

There are two renal veins, left and a right which branch off from the inferior vena cava and drain deoxygenated blood from the kidneys. There are two main blood vessels branching off from the abdominal aorta that supplies to the kidneys. The renal artery is one of these two blood vessels which enters through the hilum and sends oxygenated blood to different parts of the kidneys, such as nephrons. The blood supplied is to be filtered by removing metabolic wastes and excess water and reabsorbing minerals and nutrients.