In
Human Anatomy , the is a major
Artery of the head and neck. It arises from the
Common Carotid Artery when it bifurcates into an internal and
External branch. It has no branches in the
Neck . It ascends and enters the
Skull through the
Carotid Canal . Inside the cranium, it gives off the
Ophthalmic Artery and trifurcates into:
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Anterior Cerebral Artery
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Middle Cerebral Artery
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Posterior Communicating Artery
The internal carotid artery,
Anterior Cerebral Artery and
Posterior Communicating Artery on each side contribute to an important
Anastomosis supplying the brain, the cerebral arterial circle, which is more commonly known as the
Circle Of Willis .
