Posterior communicating artery

In human anatomy, the left and right posterior communicating arteries are small:471 arteries at the base of the brain that form part of the circle of Willis.

Posterior communicating artery
Schematic representation of the arterial circle and arteries of the brain (inferior view). Blood flows up to the brain through the vertebral arteries and the internal carotid arteries.
The brain and the arteries of the base of the brain, viewed from below, with the front of the brain at the top of the image. The temporal pole of the cerebrum and a portion of the cerebellar hemisphere have been removed on the right side.
Details
Identifiers
Latinarteria cerebri communicans posterior
TA98A12.2.06.018
TA24521
FMA50084
Anatomical terminology

Anteriorly, it unites with the internal carotid artery (ICA) (prior to the terminal bifurcation of the ICA into the anterior cerebral artery and middle cerebral artery); posteriorly, it unites with the posterior cerebral artery.

With the anterior communicating artery, the posterior communicating arteries establish a system of collateral circulation in cerebral circulation.

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