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 carotid and the posterior cerebral arteries.

Consider the marvel of the brain’s structure: The Circle of Willis maintains the condition of the brain’s blood supply by repackaging it like a neat and compact instrument. Enabling the brain ...

In 1664 he published his Cerebri Anatome and is known for his 'Circle of Willis' in the brain. He made observations on many diseases and published several more works. Of his nine children only Thomas, ...