Circle of WillisYellow - optic nerves (cut) Blue - infundibulum (pituitary removed) Explanation - On the right side of the Circle of Willis the anterior cerebral artery, posterior communicating artery, posterior cerebral artery and the carotid artery (cut) are clearly shown. The left side is folded and the carotid artery is partially obscured by pia mater, but the middle cerebral artery is clear as it disappears under the temporal lobe. The vertebral arteries that lead into the basilar artery have been cut off. Flash Animation showing structure, blood flow and function of the Circle of Willis. |
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