Arteries Unveiled
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Questions and Answers

Which layer of an artery maintains elasticity and contractility?

  • Tunica externa
  • Tunica interna
  • Endothelium
  • Tunica media (correct)

    • What is the term for the alternate blood route from an anastomosis?

  • Collateral circulation (correct)
  • Arterioles
  • End arteries
  • Capillaries

    • What type of blood vessels connect arterioles and venules?

  • Muscular arteries
  • Capillaries (correct)
  • Elastic arteries
  • Arteries

    • Which type of blood vessels regulate blood flow through true capillaries?

    <p>Pre-capillary sphincters</p> Signup and view all the answers

    What are the characteristics of venules?

    <p>They are formed from the union of several capillaries</p> Signup and view all the answers

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

    <p>To store blood and move it to other parts of the body</p> Signup and view all the answers

    Which type of blood vessels carry blood away from the heart to the tissues?

    <p>Arteries</p> Signup and view all the answers

    What is the term for the distal ends of two or more vessels uniting?

    <p>Anastomosis</p> Signup and view all the answers

    What is the function of arterioles in regulating blood flow?

    <p>Delivering blood to capillaries</p> Signup and view all the answers

    Which type of blood vessels are composed of only a single layer of cells and a basement membrane?

    <p>Capillaries</p> Signup and view all the answers

    What is the term for the extensive capillary network throughout the tissue?

    <p>Capillary network</p> Signup and view all the answers

    What are large arteries referred to as?

    <p>Elastic arteries</p> Signup and view all the answers

    What is the term for arteries that do not anastomose?

    <p>End arteries</p> Signup and view all the answers

    What is the term for the decrease in the size of the lumen of a blood vessel?

    <p>Vasoconstriction</p> Signup and view all the answers

    What is the term for the increase in the size of the lumen of a blood vessel?

    <p>Vasodilation</p> Signup and view all the answers

    What is the term for the interruption of blood supply to a whole segment of an organ?

    <p>Occlusion</p> Signup and view all the answers

    Which type of blood vessels have thinner walls and less smooth muscle compared to arteries?

    <p>Veins</p> Signup and view all the answers

    What is the term for the rings of smooth muscle fibers that regulate blood flow through true capillaries?

    <p>Pre-capillary sphincters</p> Signup and view all the answers

    Which type of blood vessels are wider, more tortuous, and specialized for the functions of specific organs?

    <p>Sinusoids</p> Signup and view all the answers

    What is the term for small vessels that are formed from the union of several capillaries and merge to form veins?

    <p>Venules</p> Signup and view all the answers

    What are the characteristics of continuous capillaries?

    <p>They have no smooth muscle</p> Signup and view all the answers

    What is the term for the blood vessels that contain valves to prevent backflow of blood?

    <p>Veins</p> Signup and view all the answers

    What can weak valves in veins lead to?

    <p>Varicose veins</p> Signup and view all the answers

    What is the term for the blood vessels that are veins with very thin walls and no smooth muscle?

    <p>Sinusoids</p> Signup and view all the answers

    Where is the largest portion of the blood volume at rest?

    <p>Veins</p> Signup and view all the answers

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

    <p>They store blood</p> Signup and view all the answers

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