Atherosclerosis and blood clotting Quiz
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5 questions, one answer each
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1. Which cells take up LDL cholesterol in the artery wall to form foam cells?
- A. Platelets
- B. Red blood cells
- C. Macrophages
- D. Smooth muscle cells
2. What is the role of thrombin in clotting?
- A. It converts soluble fibrinogen to insoluble fibrin
- B. It converts prothrombin to thromboplastin
- C. It is released by platelets to start clotting
- D. It dissolves fibrin clots
3. Which is the correct order of events in atherosclerosis?
- A. Foam cells form, endothelium damaged, plaque rupture
- B. Plaque forms, endothelium damaged, inflammation
- C. Fibrous tissue deposited, inflammation, endothelium damaged
- D. Endothelium damaged, inflammation and foam cells, plaque forms
4. A thrombus breaks off from a plaque in a carotid artery and blocks an artery in the brain. What is the break-away piece called, and what does it cause?
- A. Thrombus, angina
- B. Embolus, stroke
- C. Embolus, myocardial infarction
- D. Atheroma, stroke
5. Why does atherosclerosis raise blood pressure?
- A. The heart beats more slowly
- B. Blood volume increases
- C. The lumen narrows and the wall loses elasticity, increasing resistance
- D. Fibrin is dissolved in the artery