Types and Mechanisms of Allergies
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Questions and Answers

What is the role of IgE antibodies in the immune system?

  • Crosses the placental barrier
  • Involved in allergies (correct)
  • Provides passive immunity
  • Activates B cells
  • Which immunoglobulin class is mainly found in exocrine gland secretions?

  • IgD
  • IgM
  • IgG
  • IgA (correct)
  • What do memory cells in the immune system do?

  • Provide rapid response upon re-exposure to an antigen (correct)
  • Produce antibodies
  • React slowly to antigens
  • Cause immediate allergic reactions
  • In cell-mediated immune response, what is required for T cells to recognize antigens?

    <p>Antigen presentation by macrophages</p> Signup and view all the answers

    Which type of immunity involves obtaining antibodies from another source?

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

    Which immunoglobulin class can cross the placental barrier?

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

    Which type of allergy involves mast cells, basophils, and allergic mediators?

    <p>Type I Immediate allergies</p> Signup and view all the answers

    Where do B lymphocytes become immunocompetent?

    <p>Red bone marrow</p> Signup and view all the answers

    Which type of immune response involves B lymphocytes binding to a specific antigen and producing antibodies?

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

    In which type of immune response are circulating IgG complexes deposited in basement membranes of target organs?

    <p>Type III Immune complex diseases</p> Signup and view all the answers

    Which cells originate from monocytes and become widely distributed in lymphoid organs?

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

    What is the primary outcome of clonal selection during the humoral immune response?

    <p>Production of antibodies by B cells</p> Signup and view all the answers

    Which type of immunity involves cells producing chemicals for defense?

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

    What type of immunity involves cells targeting virus-infected cells?

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

    Why do our immune cells not attack our own proteins?

    <p>Because self-antigens are not recognized by the immune system</p> Signup and view all the answers

    What is the main characteristic of allergies caused by haptens?

    <p>They combine with our own proteins to trigger an immune response</p> Signup and view all the answers

    Which type of immunity is systemic and not restricted to the initial infection site?

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

    What differentiates humoral immunity from cellular immunity?

    <p>Production of antibodies</p> Signup and view all the answers

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