Circle of willis: The Circle of Willis

The Circle of Willis is a ring-like arterial structure located at the base of the brain which supplies blood to the brain and surrounding structures. It is a component of the cerebral circulation and comprise of five arteries. An overview of the arterial blood supply to the brain, including the anterior and posterior cerebral circulation, in addition to the Circle of Willis . 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. The Circle of Willis is an arterial network located at the base of the brain, formed by the interconnection of the anterior, middle, and posterior cerebral arteries, along with the anterior and posterior communicating arteries. It connects the internal carotid arteries to the vertebral arteries, allowing the distribution of cerebral blood flow.