What Is the Circle of Willis?

Answer

Circle of Willis refers to an anastomotic system of arteries that sits at the base of the brain. It was named after an English physician known as Thomas Willis. The system also encircles the stalk of the pituitary gland and provides important communications between the blood supplies and hindbrain.
Q&A Related to "What Is the Circle of Willis"
The Circle of Willis is the main blood supply to the brain and you need it for your brain to function AT ALL!!!
http://wiki.answers.com/Q/What+is+the+circle+od+wi...
A roughly circular anastomosis that is located at the base of the brain
http://www.chacha.com/question/what-is-the-purpose...
The center of a circle is the point within the circle equidistant from every point on the circle. The radius of a circle is the distance from the center of the circle and any point
http://www.ehow.com/about_6507590_basic-circle_.ht...
Here's a. List of Diff'rent Strokes episodes. Not all summaries explain what Willis was talkin' bout, however, the general overview is there. It takes different strokes to move the
http://www.quora.com/Diffrent-Strokes/What-was-Wil...
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