Watch what happens in the brain during an ischemic stroke, its symptoms, and the importance of calling 911 if you think someone may be having a stroke.
The majority of strokes occur when blood vessels to the brain become narrowed or clogged with fatty deposits called plaque. This cuts off blood flow to brain cells. A stroke caused by lack of blood reaching part of the brain is called an ischemic stroke. High blood pressure is a leading risk factor for ischemic stroke. © AHA
