Platelet Plug Formation in Vascular Injuries
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Questions and Answers

What is the normal concentration range of platelets in the blood?

  • 100,000 - 350,000/μl
  • 300,000 - 600,000/μl
  • 50,000 - 200,000/μl
  • 150,000 - 450,000/μl (correct)
  • Where are platelets formed in the body?

  • Bone marrow (correct)
  • Spleen
  • Kidneys
  • Liver
  • What is the size range of platelets?

  • 1 to 4 millimeters
  • 1 to 4 micrometers (correct)
  • 1 to 4 centimeters
  • 1 to 4 nanometers
  • Which cells fragment into platelets in the bone marrow or shortly after entering the blood?

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

    Do platelets have nuclei and can they reproduce?

    <p>No, they have no nuclei and cannot reproduce</p> Signup and view all the answers

    What is the function of thrombosthenin in platelets?

    <p>Causing platelet contraction</p> Signup and view all the answers

    Which organelles in platelets can synthesize various enzymes and store large quantities of calcium ions?

    <p>Endoplasmic reticulum and Golgi apparatus</p> Signup and view all the answers

    What is the main function of the protein fibrin-stabilizing factor found in platelets?

    <p>Aiding in blood coagulation</p> Signup and view all the answers

    How are platelets eliminated from circulation when their functional processes run out?

    <p>By being engulfed by macrophages</p> Signup and view all the answers

    What is the role of the coat of glycoproteins on the platelet cell membrane surface?

    <p>Repulsing adherence to injured areas</p> Signup and view all the answers

    Which component found on the platelet membrane surface activates multiple stages in the blood-clotting process?

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

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