Case Report: Variant Origin of Left Vertebral Artery from Aortic Arch: Embryological Basis

Vertebral artery is the first branch of subclavian artery. it merges with the same artery of theopposite side to form basilar artery and becomes one of the important source of blood supply tothe brain. variation in the origin of left vertebral artery was found in 65 year old female duringmagnetic resonance angiography of the neck vessels. it originated from aortic arch and waslonger as compared with the right vertebral artery. its further course was as usual. awareness ofsuch variations is important in supra-aortic vascular surgery and is clinically significant duringdiagnostic procedures like angiographi.