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Aortic arch and great vessels

(1) Aortic arch, (2) innominate (brachiocephalic) artery, (3) subclavian artery, (4) vertebral artery, (5) common carotid artery, (6) internal carotid artery (unbranched extracranially), (7) external carotid artery. (Contributed by Dr. Douglas Lanska. Source: Buchanon AM. Manual of Anatomy: Systematic and Practical, Including Embryology. Third edition. Volume 2. St. Louis: C.V. Mosby, 1917.)