Physiology of Blood Vessels SASBOU Tarik, MD, DESAIC Academic Year 2023-2024 Quiz
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Questions and Answers

What is the function of the heart in the cardiovascular system?

  • To establish blood pressure and pump blood to the lungs
  • To transport dissolved and suspended materials
  • To distribute blood throughout the body and exchange materials to/from the tissues (correct)
  • To regulate blood flow and blood pressure in the arteries

    • Which type of blood vessels establish blood pressure needed for blood flow out to the tissues?

  • Arteries (correct)
  • Arterioles
  • Capillaries
  • Veins

    • What is the main function of capillaries in the circulatory system?

  • Facilitating exchange of materials to/from the tissues (correct)
  • Returning blood from the lungs
  • Establishing blood pressure
  • Distributing blood throughout the body

    • In which circulatory channel does the heart pump blood to and return blood from the lungs?

    <p>Pulmonary Circulation</p> Signup and view all the answers

    What is the role of veins in the cardiovascular system?

    <p>To return blood from the tissues via the systemic circulation</p> Signup and view all the answers

    What forms a closed circuit in which blood pressure builds up based on the pumping of the heart?

    <p>Heart and Blood Vessels</p> Signup and view all the answers

    What is the function of arteries in the circulatory system?

    <p>Move blood away from the heart, toward tissues</p> Signup and view all the answers

    What happens during vasoconstriction in arterioles?

    <p>Smooth muscle relaxes, decreasing the diameter</p> Signup and view all the answers

    Where does nearly all of the increased cardiac output flush into during strenuous exercise?

    <p>Skeletal muscles</p> Signup and view all the answers

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

    <p>Exchange materials with the tissues</p> Signup and view all the answers

    What is the primary characteristic of veins in the circulatory system?

    <p>Transport blood from the heart to the tissues back to the heart</p> Signup and view all the answers

    What is the role of venules in the circulatory system?

    <p>Transport blood from the heart to the tissues back to the heart</p> Signup and view all the answers

    What is the function of arterioles in regulating blood flow?

    <p>Decrease pressure and regulate blood flow to the tissues</p> Signup and view all the answers

    What is the significance of vasodilation in arterioles?

    <p>Relaxation of smooth muscle increases the diameter</p> Signup and view all the answers

    How does blood pressure fluctuate in arteries during systolic and diastolic events?

    <p>High pressure nearest heart when blood is pumped out</p> Signup and view all the answers

    What triggers the vasomotor response in arterioles?

    <p>Contraction of smooth muscle in arterioles</p> Signup and view all the answers

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