Vascular System and Blood Vessels
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Questions and Answers

What is the main function of arterioles?

  • To carry blood to organs
  • To regulate blood flow to capillaries (correct)
  • To carry blood from the heart
  • To form loose connective tissue
  • What is the characteristic of the tunica intima in medium-sized arteries?

  • It is formed of loose areolar connective tissue
  • It is thin and not folded
  • It is thick and folded due to a clear internal elastic lamina (correct)
  • It is absent in medium-sized arteries
  • What is the approximate length of blood capillaries?

  • 1-5 mm
  • 0.25-1 mm (correct)
  • 5-10 mm
  • 0.1-0.5 mm
  • What is the characteristic of the tunica media in medium-sized arteries?

    <p>It contains thick elastic membranes</p> Signup and view all the answers

    What is the characteristic of the tunica adventitia in medium-sized veins?

    <p>It is thin and has some elastic fibers</p> Signup and view all the answers

    What is the characteristic of the lumen of medium-sized arteries?

    <p>It is narrow and irregular</p> Signup and view all the answers

    What is the characteristic of the wall of medium-sized veins?

    <p>It is thin and has valves</p> Signup and view all the answers

    What is the characteristic of the basement membrane in blood capillaries?

    <p>It is thin and splits to enclose pericytes</p> Signup and view all the answers

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