If Time can bring you down...Time can bend your knees.... What else has time been responsible for you doing? I've been thinking there's a lot of stuff I don't really want to take full responsibility for...heh heh.
Arterial supply of the upper limb. Dr Omar Bashir et al. The arterial supply of the upper limb is derived from the subclavian artery. The right subclavian artery originates from the brachiocephalic artery, which is the first branch of the aortic arch. The left subclavian artery originates directly from the aortic arch, being the third branch.
Three major arteries branch off the aortic arch: brachiocephalic artery, left common carotid artery and left subclavian artery. The first branch off the aortic arch that provides blood to the head, neck and right upper limb. The left is the second brand of the aortic arch. The right arises from the brachiocephalic artery. Arises from the left common carotid arteries and supply blood to most tissues of the head, except for the brain and orbit.