Abnormal branching pattern of the aortic arch Common origin of the right brachiocephalic artery and left common carotid artery 2012-04-08T01:38:36Z Bovine arch UMLS:C4021141 HP:0011589 UMLS:C4020746 SNOMEDCT_US:460890003 Ovine arch UMLS:C3532020 Commonly the three great vessels (innominate artery, left common carotid artery, and the left subclavian artery) originate from the arch of the aorta. The second most common variant of aortic arch branching occurs when the left common carotid artery has a common origin with the innominate artery. The left common carotid artery has a common origin with the innominate artery. Common brachiocephalic trunk