The circle of Willis is a junction of several important arteries at the bottom part of the brain. Learn more about its anatomy, function, and more.

Medically reviewed by Nicholas R. Metrus, MD The posterior communicating artery (PCOM) is a part of a group of arteries in the brain known as the circle of Willis. The artery connects the internal ...

The image depicts the anatomy of the circle of Willis (A) and representative subjects with a complete (B) and incomplete circle of Willis (C).

Hundreds attended a rock benefit concert in Rancho Santa Margarita Friday to support a Trabuco Canyon teen undergoing cancer treatment. The Circle of Willis performed at Friends The Sports Tavern ...