There are four carotid arteries, with a pair located on each side of the neck. This includes the right- and left-internal carotid arteries, and the right- and left-external carotid arteries. The carotid arteries deliver oxygen-rich blood from the heart to both the head and brain.
Update Date 5/15/2013
Updated by: John A. Daller, MD, PhD., Department of Surgery, University of Arkansas for Medical Sciences, Little Rock, Arkansas. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Bethanne Black, and the A.D.A.M. Editorial team.