LIVING ART ENTERPRISES, LLC / SCIENCE PHOTO LIBRARY LIVING ART ENTERPRISES, LLC / SCIENCE PHOTO LIBRARY
The carotid arteries are in the neck and supply blood flow to the brain. The image shows a very severe narrowing of the internal carotid artery in a patient with arteriosclerosis. This patient suffered a stroke as a result of arteriosclerotic plaque buildup in the arteries which leads to the severe stenosis (narrowing).
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