The arterial supply to the suprarenal glands is extensive and arises from three primary sources (Fig. 4.163):
As the bilateral inferior phrenic arteries pass upward from the abdominal aorta to the diaphragm, they give off multiple branches (superior suprarenal arteries) to the suprarenal glands.
A middle branch (middle suprarenal artery) to the suprarenal glands usually arises directly from the abdominal aorta.