Modality: Diagram

- “ Commonly seen variants of the circle of willis. See article for more information. ”

Used in the following articles:

  • Circle of Willis - “ The Circle of Willis is an arterial polygon formed as the internal carotid and vertebral systems anastomose around the optic chiasm and infundibul...”
  • Internal carotid artery - “ The internal carotid artery is a terminal branch of the common carotid artery.  Gross anatomy Origin It arises most frequently between C3 and C...”
  • Anterior cerebral artery - “ The anterior cerebral artery along with the middle cerebral artery forms at the termination of the internal carotid artery. It is the smaller of t...”
  • Anterior communicating artery - “ The anterior communicating artery (ACOM) arises from the anterior cerebral artery and acts as an anastomosis between the left and right anterior c...”
  • Middle cerebral artery - “ The middle cerebral artery (MCA) is one of the three major paired arteries that supply blood to the brain. The MCA arises from the internal caroti...”
  • Posterior communicating artery - “ The posterior communicating artery (PCOM or P Comm) makes up the posterior linkage in the circle of Willis. Gross anatomy Course The PCOM origi...”
  • Vertebral artery - “ The vertebral arteries (VA) are paired arteries, each arising from the respective subclavian artery and ascending in the neck to supply the poster...”
  • Posterior inferior cerebellar artery - “ Posterior inferior cerebellar artery (PICA) is one of the three vessels that provide arterial supply to the cerebellum. It is the most variable an...”
  • Basilar artery - “ The basilar artery is part of the posterior cerebral circulation. It artery arises from the confluence of the left and right vertebral arteries at...”
  • Anterior inferior cerebellar artery - “ The anterior inferior cerebellar artery (AICA) is one of three vessels that provides arterial blood supply to the cerebellum. It has a variable or...”
  • Pontine arteries - “ The pontine branches are the small arterial branches of the basilar artery that supply the pons and structures adjacent to the pons. There are us...”
  • Superior cerebellar artery - “ The superior cerebellar artery (SCA) arises from the distal basilar artery, just below the posterior cerebral artery (PCA) and typically supplies:...”
  • Posterior cerebral artery - “ The posterior cerebral arteries (PCA) are the terminal branches of the basilar artery and supply the occipital lobes and posteromedial temporal lo...”

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