Capillaries 101
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Questions and Answers

What is the total cross-sectional surface area of capillaries compared to the aorta?

  • 100 times less
  • 10 times less
  • 1000 times more
  • 800 times more (correct)

    • What percentage of blood vessels in the body are capillaries?

  • 25%
  • 50%
  • 90% (correct)
  • 10%

    • What is the main characteristic of capillaries?

  • Thick walls
  • High blood pressure
  • Small diameter (correct)
  • Low blood flow

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