Thymus and T-cell Development Quiz
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Questions and Answers

What is the primary site where T-cells become immunologically competent?

  • Bone Marrow
  • Thymus (correct)
  • Spleen
  • Lymphatic organs

    • Which of the following is not a function of T-cells?

  • Promotion of antibody production (correct)
  • Production of lymphokines
  • Inhibition of macrophage migration
  • Contribution to cell-mediated immunity

    • Which of the following is NOT a type of lymphokine produced by T-cells?

  • Lymphotoxin
  • Erythropoietin (correct)
  • Tumor Necrosis Factor
  • Interleukin

    • Which organ plays a primary role in the growth and differentiation of lymphocytes?

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

    What is the primary function of heparin and histamine in the immediate hypersensitivity reaction?

    <p>Dilate blood vessels and increase vessel permeability</p> Signup and view all the answers

    What is the main role of antibodies produced by plasma cells in the immune response?

    <p>Bind to receptors on basophil plasma membranes</p> Signup and view all the answers

    Why do platelets appear somewhat smaller in the microscope?

    <p>Due to the division of cytoplasm into hyalomere and granulomere</p> Signup and view all the answers

    What is the primary function of the cytoskeletal fibers in platelets?

    <p>Facilitate platelet movement</p> Signup and view all the answers

    What is the role of plasma-borne substances like antibodies at a site of infection?

    <p>Neutralize antigens</p> Signup and view all the answers

    How do antibodies induce the release of basophil granule contents?

    <p>By binding to receptors on basophil plasma membranes</p> Signup and view all the answers

    What is the primary function of histamine in the immediate hypersensitivity reaction?

    <p>Increase vessel wall permeability</p> Signup and view all the answers

    What is the primary function of heparin in the immediate hypersensitivity reaction?

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

    What is the role of antibodies produced by plasma cells in the immune response?

    <p>Bind to receptors on basophils</p> Signup and view all the answers

    What is the primary function of the cytoskeletal fibers in platelets?

    <p>Function in platelet movement</p> Signup and view all the answers

    Why do platelets appear somewhat smaller in the microscope?

    <p>Their cytoplasm hardly stains</p> Signup and view all the answers

    What is the primary site where T-cells become immunologically competent?

    <p>Thymus gland</p> Signup and view all the answers

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