Circle of Willis
MESHD002941
A polygonal anastomosis at the base of the brain formed by the internal carotid (CAROTID ARTERY, INTERNAL), proximal parts of the anterior, middle, and posterior cerebral arteries (ANTERIOR CEREBRAL ARTERY; MIDDLE CEREBRAL ARTERY; POSTERIOR CEREBRAL ARTERY), the anterior communicating artery and the posterior communicating arteries.
Synonyms
- Willis' Circle
- Circle, Willis'
- Willis Circle
- Cerebral Arterial Circle
- Arterial Circle, Cerebral
Source last updated 2026-05-24T15:27:57.172Z