Atherosclerosis, blood clotting and cardiovascular disease Quiz
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5 questions, one answer each
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1. Which is the correct order of events in atherosclerosis?
- A. Plaque forms, endothelium damaged, white blood cells enter
- B. White blood cells enter the wall, plaque forms, then the endothelium is damaged
- C. Endothelium damaged, inflammatory response, plaque forms
- D. Blood pressure rises, plaque forms, endothelium damaged
2. What does thrombin do?
- A. Converts fibrinogen to fibrin
- B. Converts prothrombin to thromboplastin
- C. Carries oxygen in blood
- D. Engulfs lipids in the artery wall
3. Why does a plaque in an artery raise blood pressure?
- A. It makes the blood more dilute
- B. It narrows the lumen and stiffens the wall, increasing resistance to flow
- C. It increases the heart's thickness
- D. It causes arteries to widen
4. What causes a myocardial infarction?
- A. A blocked artery in the brain
- B. Blockage of a coronary artery, depriving heart muscle of oxygen
- C. A burst vein in the leg
- D. Too much thromboplastin in the blood
5. Which statement about fibrinogen is correct?
- A. It is an enzyme
- B. It is insoluble and forms the clot
- C. It is soluble and is converted to fibrin by thrombin
- D. It is released by platelets