Blood-Brain Barrier And Cerebral Perfusion Practice Test

What are the two terminal branches of the internal carotid artery?

Posterior cerebral artery and basilar artery Anterior cerebral artery and posterior cerebral artery Anterior cerebral artery and middle cerebral artery Middle cerebral artery and posterior cerebral artery

Correct Answer:

Middle cerebral artery and posterior cerebral artery

Explanation:

The internal carotid artery, as it enters the brain, ends by giving rise to two major branches that form the anterior circulation: the anterior cerebral artery and the middle cerebral artery. The posterior cerebral artery belongs to the posterior circulation and typically arises from the basilar artery, with a possible connection to the internal carotid via the posterior communicating artery, but it is not a direct terminal branch of the internal carotid. So the two direct terminal branches to remember are the anterior cerebral and middle cerebral arteries, which is why the pairing including the posterior cerebral artery does not reflect the usual direct termination of the internal carotid.

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