7- Ophthalmic Artery is a branch of O the Common Carotid Artery the internal Carotid Artery the external Carotid Artery none of above 8- the arteries that contribute to the circle of Willis include all of the following except O internal otid arteries the anterior communicating artery posterior cerebral artery vertebral arteries none of above O all of above 9- the maxillary arteries arise from internal carotid arteries external carotid arteries common carotid arteries none of above

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