Posterior cerebral artery

Centrally located in the brain, the posterior cerebral artery makes up the lower portion of the circle of Willis. This arterial network also consists of posterior and anterior communicating arteries, as well as middle cerebral, the anterior cerebral, the internal carotid, and other arteries. Collectively, this network of blood vessels conveys oxygenated blood to several regions within the brain. The posterior cerebral artery makes up the lower boundary of the circle of Willis. Since this blood vessel is centrally located, it has many significant branches. These offshoots can be classed into the three categories: the central, the choroidal, and the cortical branches. The posterior cerebral artery is susceptible to occlusion and conditions thereby resulting. This involves blood vessel blockage, but it is not thrombosis. A vessel becomes occluded by developing sudden blockage, and this usually results from a blood clot. Thrombosis refers specifically to a damaged vessel and a blood clot. In that regard, an occlusion may be deemed as a more general description.
Written and medically reviewed by the Healthline Editorial Team
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In Depth: Posterior cerebral artery

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