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The Hunger Project Bolen Report
Ohm Society
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Circle of Willis Print E-mail

Dr. Kennedy The Circle of Willis is an arterial circle at the base of the brain that is of critical importance. The circle of Willis receives all the blood that is pumped up the two internal carotid arteries that come up the front of the neck and that is pumped from the basilar artery formed by the union of the two vertebral arteries that come up the back of the neck. All the principal arteries that supply cerebral hemispheres of the brain branch off from the circle of Willis. The circle of Willis is often not complete, that is it may not have all of the six possible branches. Only a third of people enjoy a complete circle of Willis. This is of importance in the event that one of the major arteries (an internal carotid or vertebral artery) supplying the circle of Willis is occluded. The presence of a complete circle of Willis permits a continuing supply of blood to the entire brain and helps avert a stroke



The information in this article is not meant to be medical advice.�Treatment for a medical condition should come at the recommendation of your personal physician.

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