Extends to the base of the skull. No branches normally seen. Posterior Communicating Artery Second branch of supraclinoid internal carotid. Supplies thalamus, hypothalamus, optic chiasm, and mamillary bodies. Common site for aneurysms.
Supplies globe, orbit, frontal scalp, the frontal and ethmoidal sinuses.
Ophthalmic artery branches anastamose with Maxillary artery branches - potential for collateral flow in cases of proximal carotid occulsion. Last branch to originate from Internal Carotid Artery. Supplies choroid plexus of anterior portion of temporal horn of lateral ventricles. Anterior Cerebral Artery One of the terminal branches of internal carotid artery. From Internal Carotid Bifurcation to Anterior Communicating Artery.