Anatomy
Course
Right common carotid artery originates from the right brachiocephalic trunk posterior to the sternoclavicular joint.
Left common carotid originates as a main branch of the arch of the aorta and ascends to enter the neck behind the left sternoclavicular joint.
Both bifurcate into the internal and external carotid arteries in the carotid triangle.
Supply
The common carotid artery supplies the neck, face and via its branches contribute to the cerebral vascular supply.
Clinical
The bifurcation of the common carotid artery is a common place for build up of atherosclerotic plaque. Should the plaque embolise and travel via the internal carotid artery to the brain, it may cause a stroke.
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