there are two common carotid arteries. The right common carotid artery arises from the brachiocephalic arterial trunk. The left common carotid artery arises directly from the aorta. Both rise into the neck and divide into two arteries in the middle of the neck, the internal carotid artery and the external carotid artery.
The major artery for the head and neck, that divides into the internal and external carotid arteries. On the right, it begins at the bifurcation of the brachiocephalic trunk, and on the left - it is a direct branch from the aorta. image
In human anatomy, the common carotid artery is an artery that supplies the head and neck; it divides in the neck to form the external and internal carotid arteries.