There are three adrenal arteries – the superior that arises from the inferior phrenic artery, the middle that arises directly off the aorta and the inferior that arises from the renal artery usually as a branch of the capsular artery. This schematic only shows 3 branches per vessel, but in reality there is extensive branching before each artery actually enters the gland.
(Image courtesy of Ashley Davidoff M.D.) adrenal anatomy blood supply
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This image shows a schematic of the histologic distribution of the adrenal arterial supply and venous drainage. The dominant area of arterial supply is the cortex, and the dominant area of venous drainage is the medulla. (Image courtesy of Ashley Davidoff M.D.) adrenal blood supply histology anatomy
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