Cardiovascular System: Blood Vessels and Circulatory Routes
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Questions and Answers

Which vessels carry blood towards the heart?

  • Venules
  • Arteries (correct)
  • Arterioles
  • Veins

    • What is the function of arterioles?

  • To control blood flow into capillaries (correct)
  • To connect capillaries to veins
  • To allow exchange of gases and nutrients
  • To carry blood towards the heart

    • Which type of tissue forms the inner layer (Tunica Interna) of a blood vessel?

  • Elastic fiber tissue
  • Smooth muscle tissue
  • Simple squamous endothelium tissue (correct)
  • Striated muscle tissue

    • What is the thickest layer in the wall of a blood vessel?

    <p>Tunica Media (B)</p> Signup and view all the answers

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

    <p>To carry blood away from the heart (B)</p> Signup and view all the answers

    Which vessels connect capillaries to veins?

    <p>Venules (C)</p> Signup and view all the answers

    What is the function of capillaries in the circulatory system?

    <p>To allow exchange of gases and nutrients (B)</p> Signup and view all the answers

    Which component of the Tunica Media is responsible for the elasticity of blood vessels?

    <p>Smooth muscle (C)</p> Signup and view all the answers

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

    <p>To control blood flow into capillaries (D)</p> Signup and view all the answers

    What tissues form the inner layer (Tunica Interna) of a blood vessel?

    <p>Simple squamous endothelium tissue (C)</p> Signup and view all the answers

    What is the role of smooth muscle cells in blood vessels?

    <p>To regulate the diameter of the lumen (C)</p> Signup and view all the answers

    What happens when smooth muscle in the blood vessel contracts?

    <p>Vasoconstriction occurs (A)</p> Signup and view all the answers

    What is the function of the elastic fibers within the tunica media of blood vessels?

    <p>To allow for expansion under pressure (D)</p> Signup and view all the answers

    What is the main role of arteries in the circulatory system?

    <p>To carry oxygenated blood away from the heart to other organs (B)</p> Signup and view all the answers

    What is a characteristic of all arteries?

    <p>They carry deoxygenated blood (except pulmonary arteries) (D)</p> Signup and view all the answers

    What is found in the thickest layer of artery walls?

    <p>Smooth muscle cells and elastic tissue (A)</p> Signup and view all the answers

    In what situation would smooth muscle in a small artery or arteriole contract?

    <p>In response to increased sympathetic stimulation (D)</p> Signup and view all the answers

    What is the function of the tunica interna in artery walls?

    <p>To allow for expansion under pressure (A)</p> Signup and view all the answers

    What happens when elastic arteries stretch and recoil under pressure?

    <p>Vasodilation occurs (D)</p> Signup and view all the answers

    What is a distinguishing feature of arteries compared to veins?

    <p>Thin walls that can expand under pressure (D)</p> Signup and view all the answers

    What causes vasoconstriction in blood vessels?

    <p>Increase in sympathetic stimulation (A)</p> Signup and view all the answers

    What type of blood do all arteries carry?

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

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