Encyclopedia of Clinical Neuropsychology

2018 Edition
| Editors: Jeffrey S. Kreutzer, John DeLuca, Bruce Caplan

Posterior Communicating Artery

  • Elliot J. RothEmail author
Reference work entry
DOI: https://doi.org/10.1007/978-3-319-57111-9_2196

Definition

The two posterior communicating arteries form the posterolateral borders of the circle of Willis, connecting posteriorly to the posterior cerebral arteries and anteriorly to the internal carotid arteries on each side. As such, it forms a connection between the anterior and posterior cerebral circulations, which make it particularly important for the development of collateral circulation when one part of the blood supply is compromised. The posterior communicating arteries supply the thalamus, hypothalamus, and optic chiasm that carries visual signals. It is the second most common location for cerebral aneurysms. Ruptures of these aneurysms can result in cranial nerve palsies, especially oculomotor dysfunction.

Cross-References

Copyright information

© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Department of Physical Medicine and Rehabilitation, Northwestern University, Feinberg School of MedicineChicagoUSA