Blood Circulation: Arteries and Veins
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Questions and Answers

What type of blood does the venous system carry?

  • Oxygenated blood
  • Filtered blood
  • Plasma
  • Deoxygenated blood (correct)

    • Where are deep veins located in the body?

  • On the surface of muscles
  • Just under the skin
  • Inside organs
  • Deep within the body (correct)

    • What is the main difference between arteries and veins?

  • Arteries have more smooth muscle
  • Arteries have lower pressure
  • Veins have thinner vessel walls (correct)
  • Veins have thicker vessel walls

    • What percentage of total blood volume is typically found in veins?

    <p>75%</p> Signup and view all the answers

    Why do veins have valves?

    <p>To prevent blood from flowing back away from the heart</p> Signup and view all the answers

    Which of these is a characteristic of superficial veins?

    <p>Can be seen and felt just under the skin</p> Signup and view all the answers

    What type of blood do pulmonary veins carry?

    <p>Oxygenated blood</p> Signup and view all the answers

    What is the largest vein in the body called?

    <p>Vena cava</p> Signup and view all the answers

    Why is the pressure generally much lower in veins than in arteries?

    <p>Veins have larger diameters</p> Signup and view all the answers

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

    <p>To carry deoxygenated blood from the body back to the heart</p> Signup and view all the answers

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