Page Contents1 VESSEL PATHWAY2 FUNCTION3 CAUSES OF INJURY4 CLINICAL PRESENTATION OF INJURY5 OTHER INFO VESSEL PATHWAY The external carotid artery is a branch of the common carotid artery. Aorta → Brachiocephalic (only on right) → Common Carotid → External Carotid FUNCTION CAUSES OF INJURY CLINICAL PRESENTATION OF INJURY OTHER INFO Page updated: 06.20.2016