Hypersensitivity Reactions and Immune Responses Quiz
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Questions and Answers

Which type of immune reaction is responsible for tissue injury and disease?

  • Type I hypersensitivity
  • Type IV hypersensitivity
  • Type II hypersensitivity
  • Type III hypersensitivity (correct)
  • What is the term used to describe immune responses directed against self antigens?

  • Hypersensitivity
  • Immunity
  • Autoimmunity (correct)
  • Sensitivity
  • What is the main immunoglobulin involved in immediate hypersensitivity reactions?

  • IgE (correct)
  • IgG
  • IgD
  • IgA
  • Which type of hypersensitivity is characterized by antibodies that are directed against cell or tissue antigens?

    <p>Type II hypersensitivity</p> Signup and view all the answers

    What is the term used to describe disorders that result from the formation of immune complexes between antibodies and soluble antigens in the blood?

    <p>Type III hypersensitivity</p> Signup and view all the answers

    Which type of hypersensitivity is characterized by reactions of T lymphocytes specific for self antigens or microbes in tissues?

    <p>Type IV hypersensitivity</p> Signup and view all the answers

    Study Notes

    Immune Reactions and Hypersensitivity

    • Type IV immune reaction is responsible for tissue injury and disease.
    • Autoimmune responses are directed against self-antigens.
    • Immunoglobulin E (IgE) is the main immunoglobulin involved in immediate hypersensitivity reactions.
    • Type II hypersensitivity is characterized by antibodies directed against cell or tissue antigens.
    • Immune complex diseases are disorders that result from the formation of immune complexes between antibodies and soluble antigens in the blood.
    • Type IV hypersensitivity is characterized by reactions of T lymphocytes specific for self-antigens or microbes in tissues.

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    Description

    Test your knowledge of hypersensitivity reactions and their role in immune responses. Learn about the immune system's dual nature of defending against infections while also causing tissue injury and disease. Explore the concept of protective immunity and detectable immune responses to antigens.

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