The Circle of Willis is located at the base of the brain. The term refers to a junction between the arteries that supply blood to the brain. It is formed at the end of the right and left internal carotid arteries. Leaving the circle are the blood vessels of the brain itself - the "cerebral arteries". Great answer, it is the mass of arteries that circle around each other in the junction for the brain, I didn't realize they were at the base of the brain. I thought they were more towards the front and middle, kind of, behind the eyes, (sorry for the big technical terms). But I haven't heard it described better.
The Circle of Willis is a circle of arteries that provides main blood supply to the brain and the surrounding structures. It is important as prevents ischemia(shortage of blood to tissues) thus preserving cerebral perfusion when one or more artery in the brain is blocked due to throbosis or embolism.
cerebral arterial circle (circle of Willis)
The Circle of Willis.
Circle of Willis or the cerebral arterial circle
Cerebral arterial circle or circle of Willis
Internal Carotid Arteries
Circle of Willis
Cerebral arterial circle AKA Circle of Willis
Circle of Willis
It is called moyamoya and it an extremely rare genetic condition.
The vertebral arteries merge to form a basilar artery which form the posterior Circle of Willis. The middle cerebral arteries form the rest of the Circle of Willis.
The Circle of Willis.