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6. Which blood vessel has thick walls compared to a small lumen?
7. Which blood vessel carries blood under high pressure so the walls are strong and elastic?
8. Which blood vessel carries blood away from the heart?
9. Which blood vessel has walls which are only one cell thick?
10. Which blood vessel is at a lower pressure so it doesn't need very thick walls?
11. Which blood vessel carries blood to the heart?
12. The vena cava is which largest blood vessel?
13. The aorta is which largest blood vessel?
14. Which blood vessel is the smallest?
