Blood Lymphocyte Phenotype Markers Quiz
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Questions and Answers

Where does the maturation of B cells primarily occur?

  • Thymus
  • Lymph nodes
  • Bone marrow (correct)
  • Spleen

    • What is the function of T helper cells (Th) in the immune system?

  • Promote immune response by activating other immune cells (correct)
  • Secrete antibodies
  • Identify self-antigens
  • Directly kill infected cells

    • Which type of cell secretes antibodies?

  • Monocytes
  • Plasma cells (correct)
  • Natural killer cells
  • T regulatory cells

    • Where do T cells undergo maturation and selection processes?

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

    What happens during negative selection of T cells in the thymus?

    <p>Autoreactive cells undergo apoptotic cell death</p> Signup and view all the answers

    Which progenitor gives rise to leukocytes, platelets, erythrocytes, and dendritic cells?

    <p>Common myeloid progenitor</p> Signup and view all the answers

    What is the function of B lymphocytes?

    <p>Secrete antibodies to eliminate antigens</p> Signup and view all the answers

    Which marker is specific to Helper T cells?

    <p>CD4</p> Signup and view all the answers

    What is the role of Cytotoxic T cells?

    <p>Kill tumor cells</p> Signup and view all the answers

    Which antigen recognition receptor is specific to B lymphocytes?

    <p>CD19</p> Signup and view all the answers

    What is the nature of the recognized antigen by T lymphocytes?

    <p>Peptides only in the form of Peptide+MHC molecules on the surface of APCs</p> Signup and view all the answers

    What distinguishes T regulatory cells from Helper T cells and Cytotoxic T cells?

    <p>They suppress the immune response</p> Signup and view all the answers

    Which cells recognize antigens directly, unlike T lymphocytes?

    <p>B lymphocytes</p> Signup and view all the answers

    What is the main function of T lymphocytes in antigen recognition?

    <p>Recognize a wide variety of antigens</p> Signup and view all the answers

    What is the main function of B lymphocytes in the immune system?

    <p>Humoral immunity</p> Signup and view all the answers

    Which type of lymphocytes do not express either BCR or TCR?

    <p>NK cells</p> Signup and view all the answers

    What is the antigen receptor on B lymphocytes?

    <p>BCR (IgM, IgD)</p> Signup and view all the answers

    What is the key difference in antigen recognition between CD4+ and CD8+ T cells?

    <p>CD4+ cells recognize peptides + class II MHC, while CD8+ cells recognize peptides + class I MHC.</p> Signup and view all the answers

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