Abnormal renal artery morphology Renal artery duplication 2018-07-04T12:09:29Z Double renal arteries with aortic origin is a benign condition representing the persistence of the embryonic vessels, the lateral branches of the mesonephros, within the renal ascent. The embryonic urogenital ridge from which the kidneys develop is supplied by several paired arteries: the rete arteriosum urogenitale. The later developing metanephric kidneys retain only a single pair of mesonephric arteries, however a variable number may persist. Accessory renal artery Double renal artery The renal arteries carry blood from the aorta to the kidney; normally one renal artery is present on each side of the body. Renal artery duplication refers to the presence of two rather than one renal artery on a given side of the body.