circle of Willis
anatomy
Quick Summary
The Circle of Willis is a ring of arteries located at the base of the brain that ensures a continuous blood supply to the brain. It is named after the British physician Thomas Willis. This anatomical structure is formed by the connection of the two vertebral arteries and the two internal carotid arteries, along with connecting arteries between them. The Circle of Willis is crucial for maintaining adequate blood flow to the brain, even if one of the major arteries supplying it becomes blocked.123
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