The arteries outer or carotid artery, external (ECA) branches of the arteries, is common that the task of blood supply to part of the outside of the skull is responsible. Feeding the blood vessels more through the branches of the arteries, the exterior is done. Of the arteries, a face that branch from the arteries, is an outer plays an important role in blood supply. Of the arteries, lobes, surface of the arteries, jaw crusher () the two branches of end arteries are exterior.