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Immediate Hypersensitivity Reaction Quiz
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Immediate Hypersensitivity Reaction Quiz

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Questions and Answers

What is the effector cell of the immediate hypersensitivity reaction?

  • Monocytes
  • Eosinophils (correct)
  • Neutrophils
  • Macrophages
  • What is the antibody class involved in immediate hypersensitivity reactions?

  • IgA
  • IgG
  • IgM
  • IgE (correct)
  • Which antibody is produced by B-lymphocytes and binds to Fc receptors on basophils and mast cells?

  • IgG
  • IgE (correct)
  • IgM
  • IgA
  • What is required to cause degranulation of mast cells and basophils during an allergic response?

    <p>Cross-linking of lgE molecules with allergen</p> Signup and view all the answers

    Which phase of the immediate hypersensitivity reaction involves the release of histamine and tryptase?

    <p>Early phase</p> Signup and view all the answers

    What is the main role of the high-affinity IgE receptor in mediating the allergic response?

    <p>Coating the cell with antigen-specific IgE molecules</p> Signup and view all the answers

    What is the consequence when multivalent antigens come in contact with mast cells or basophils?

    <p>Degranulation of mast cells and basophils</p> Signup and view all the answers

    Which condition can occur if prompt treatment with epinephrine is not administered during a severe allergic reaction?

    <p>Hemodynamic and respiratory instability</p> Signup and view all the answers

    What is the primary effect of the clumping of high-affinity IgE receptors on mast cell surfaces?

    <p>Activating non-receptor tyrosine kinases</p> Signup and view all the answers

    Which immune cells have the high-affinity IgE receptor involved in mediating allergic responses?

    <p>Mast cells and basophils</p> Signup and view all the answers

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