Circle of Willis Atherosclerotic Stenosis Quiz
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Questions and Answers

What is a common cause of atherosclerotic stenosis?

  • Genetic predisposition
  • Poor diet
  • Physical injury to the arteries
  • Prolonged smoking (correct)

    • What occurs in the early stages of atherosclerotic stenosis?

  • Critical stenosis limits blood flow
  • Hemorrhage into the atheroma
  • Remodeling of the media (correct)
  • Acute plaque change rupture/fissuring

    • What happens when there is a critical stenosis?

  • Chronic occlusion limits flow so severely that tissue demand exceeds supply (correct)
  • Rupture/fissuring exposes highly thrombogenic plaque constituents
  • Erosion/ulceration exposes the thrombogenic subendothelial BM to blood
  • Hemorrhage into the atheroma, expanding its volume

    • What is the result of rupture/fissuring in the artery wall?

    <p>Thrombus formation and micro-emboli</p> Signup and view all the answers

    What are some common clinical consequences of atherosclerotic disease?

    <p>Myocardial infarction (heart attack), peripheral vascular disease (gangrene of extremities)</p> Signup and view all the answers

    What factors determine the outcomes of atheroembolism?

    <p>The size of the affected vessel, the size and stability of the plaques</p> Signup and view all the answers

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