Are You Heart-Healthy?

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Questions and Answers

What is the function of blood vessels in the cardiovascular system?

  • To transport blood throughout the body (correct)
  • To diffuse fluids and solutes into body cells
  • To adjust the volume and rate of blood flow
  • To generate pressure for blood flow

Which blood vessels have the largest diameter in the cardiovascular system?

  • Venules
  • Capillaries
  • Arteries (correct)
  • Arterioles

Why must blood flow slowly in capillaries?

  • To adjust the volume and rate of blood flow
  • To allow time for substances to diffuse into and out of the extracellular fluid (correct)
  • To transport blood throughout the body
  • To generate pressure for blood flow

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