These are paired arteries, a right and a left branch, which is one of the terminal branches of the aorta. It provides a blood supply to the pelvic viscera, the walls of the pelvic cavity and the lumbar and gluteal muscle masses. | These are paired arteries, a right and a left branch, which is one of the terminal branches of the aorta. It provides a blood supply to the pelvic viscera, the walls of the pelvic cavity and the lumbar and gluteal muscle masses. |