carotis communis definition
comÂ·mon caÂ·rotÂ·id arÂ·teÂ·ry. Origin, right from brachiocephalic, left from arch of aorta; runs upward in the neck and divides opposite upper border of thyroid cartilage (C-4 vertebral level) into terminal branches, external and internal carotid. Synonym(s): arteria carotis communis. common carotid artery. A major artery to the head.