Reference Index - Vascular

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Stroke - series

Part 1:
Part 1

Much of the brain is supplied blood by the internal carotid arteries.



Part 2:
Part 2

The internal carotid arteries branch at the base of the brain in an area called the circle of Willis.



Part 3:
Part 3

A blood clot (thrombus) may form in the body, break-off, and travel to the brain through a carotid artery and the circle of Willis.



Part 4:
Part 4

The blood clot may block the passage of blood through a brain artery, depriving nearby tissue of oxygen and nutrients. The result is a stroke.




Review Date: 6/15/2010
Reviewed By: Daniel B. Hoch, PhD, MD, Assistant Professor of Neurology, Harvard Medical School, Department of Neurology, Massachusetts General Hospital. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

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