Which pair of arteries are commonly cited as the two main supplies to the occipital lobe?

• A. Anterior cerebral artery and Middle cerebral artery
• B. Middle cerebral artery and Posterior cerebral artery
• C. Posterior cerebral artery and Temporal artery
• D. Anterior cerebral artery and Posterior cerebral artery

Answer: (B)

The main concept is that the occipital lobe is primarily supplied by the posterior cerebral artery, with additional input from the middle cerebral artery to the lateral and inferior parts. The primary visual cortex sits in the calcarine region and is mainly supplied by a calcarine branch of the posterior cerebral artery, while nearby visual areas get some supply from the middle cerebral artery. The anterior cerebral artery does not reach the occipital lobe, and the temporal artery isn’t a cerebral artery supplying brain tissue. So the two key sources responsible for the occipital lobe’s blood supply are the middle cerebral artery and the posterior cerebral artery.