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Aortic arch and great vessels in relationship to the heart and lungs

(1) Superior vena cava, (2) aortic arch, (3) pulmonary artery, (4) innominate (brachiocephalic) artery, (5) right subclavian artery, (6) right vertebral artery, (7) right common carotid artery, (8) left common carotid artery, (9) left vertebral artery, and (10) left subclavian artery. (Contributed by Dr. Douglas Lanska. Source: Gerrish FH, editor. Textbook of Anatomy by American Authors. Philadelphia and New York: Lea Brothers & Co., 1902.)