Veins and Venous Circulation
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Questions and Answers

What is the main function of veins in the circulatory system?

  • To transport deoxygenated blood from the heart to the tissues (correct)
  • To regulate blood pressure
  • To contract and push blood to the tissues
  • To transport oxygenated blood from the heart to the tissues

    • What is the purpose of valves in some veins?

  • To facilitate the exchange of gases in the blood
  • To control the flow of oxygenated blood to the heart
  • To prevent backflow of blood and regulate one-way flow to the heart (correct)
  • To increase blood pressure in the veins

    • How does the skeletal muscle pump influence venous return?

  • By compressing the veins and propelling blood towards the heart (correct)
  • By contracting and pushing blood towards the tissues
  • By decreasing the diameter of the veins
  • By increasing blood pressure in the veins

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