Lec. 3 White Blood Cells: Resistance to Infection
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Questions and Answers

What is the primary function of basophils?

  • Providing chronic immunity against infections
  • Squeezing through blood capillaries
  • Phagocytosis
  • Releasing histamine and containing receptors for IgE (correct)

    • What is the primary role of lymphocytes in the body?

  • Phagocytosis of pathogens
  • Squeezing through blood capillaries
  • Releasing histamine for inflammation
  • Providing chronic immunity against infections (correct)

    • Which of the following is NOT a property of white blood cells (WBCs)?

  • Diapedesis
  • Erythropoiesis (correct)
  • Ameboid motion
  • Chemotaxis

    • What is the function of heparin in basophils?

    <p>Increase healing processes</p> Signup and view all the answers

    Which of the following is a type of agranular leukocyte?

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

    What is the primary role of granulocytes and monocytes in the body?

    <p>Ingesting and destroying invading organisms through phagocytosis</p> Signup and view all the answers

    Which of the following statements about white blood cells is correct?

    <p>They are responsible for fighting infections and toxic agents in the body.</p> Signup and view all the answers

    What is the condition called when the white blood cell count is lower than normal?

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

    Which of the following is NOT a location where infectious agents can normally be found in the body?

    <p>Bone marrow</p> Signup and view all the answers

    What is the process by which white blood cells destroy invading bacteria or viruses?

    <p>Both phagocytosis and antibody/lymphocyte production</p> Signup and view all the answers

    Which of the following conditions is characterized by an abnormally high white blood cell count?

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

    What is the normal range for white blood cell count in a healthy individual?

    <p>4,000 - 11,000 cells per cubic millimeter</p> Signup and view all the answers

    Which of the following is a function of neutrophils?

    <p>Phagocytosis and inflammation response</p> Signup and view all the answers

    What is the typical percentage range of neutrophils in the body?

    <p>50-70%</p> Signup and view all the answers

    Which type of white blood cell has a multilobed nucleus that typically takes an 'S' shape?

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

    What is the plasma half-life of neutrophils?

    <p>10-20 hours</p> Signup and view all the answers

    Which type of white blood cell remains in the blood for 24 hours before migrating to tissues?

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

    What is the primary function of eosinophils?

    <p>Both b and c</p> Signup and view all the answers

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