Humoral Immunity Quiz
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Questions and Answers

During the secondary response, which antibody will be in higher concentration?

  • IgA
  • IgE
  • IgM
  • IgG (correct)
  • What is the duration of the antibody response in the primary response?

  • Long
  • Moderate
  • Indefinite
  • Short (correct)
  • What is the primary function of antibodies?

  • Transport nutrients
  • Promote cell growth
  • Protect against infectious agents or their products (correct)
  • Regulate body temperature
  • What are the two main functions of antibodies?

    <p>Neutralize toxins and viruses; Opsonize microorganisms</p> Signup and view all the answers

    What is the process by which antibodies make microorganisms more easily ingested by phagocytic cells?

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

    What is the primary antibody in the fetus due to its ability to cross the placenta?

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

    After birth, does the concentration of IgG in the mother increase or decrease?

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

    What are the processes involved in the evaluation of humoral immunity?

    <p>Measuring amounts of IgG, IgM and IgA</p> Signup and view all the answers

    How is the evaluation of humoral immunity tested?

    <p>Patient serum (blood)</p> Signup and view all the answers

    Which tests are used for the evaluation of humoral immunity?

    <p>Nephelometry and Immuno-electrophoresis</p> Signup and view all the answers

    What type of antibodies can be made by the fetus if an infection occurs?

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

    What type of immunity is primarily targeted by humoral immunity?

    <p>Antibody-mediated immunity</p> Signup and view all the answers

    Which type of immunity is more important for protection against intracellular pathogens?

    <p>Cell-mediated immunity</p> Signup and view all the answers

    What specific diseases are targeted by humoral immunity due to exotoxin mediation?

    <p>Tetanus and diphtheria</p> Signup and view all the answers

    Which virulence types are directly targeted by humoral immunity?

    <p>Pneumococci, meningococci, haemophilus influenzae</p> Signup and view all the answers

    When does the primary immune response occur?

    <p>The first time an antigen enters the body</p> Signup and view all the answers

    After a primary response, how long is the lag period for the antibodies to become detectable in the serum?

    <p>7-10 days</p> Signup and view all the answers

    What is the first antibody to be presented when exposed to infection for the first time, followed by which antibody?

    <p>IgM; followed by IgG or IgA</p> Signup and view all the answers

    Which antibody declines earlier than IgG?

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

    For how long does the serum antibody concentration continue to rise before declining?

    <p>Several weeks</p> Signup and view all the answers

    What is the secondary response?

    <p>A second encounter with the same antigen or closely related one months or years after the primary response</p> Signup and view all the answers

    In the secondary response, what characterizes the antibody response compared to the primary response?

    <p>Rapid antibody response at higher levels than primary response</p> Signup and view all the answers

    What is the role of humoral immunity in protection against pathogens?

    <p>Mainly against extracellular pathogens</p> Signup and view all the answers

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