Immune System Development in Infants
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Questions and Answers

Which type of cells demonstrate decreased chemotoxis in infants, reaching adult levels at age 7?

  • Monocytes
  • Neutrophils
  • Phagocytic cells (correct)
  • B cells

    • Which type of immunity does not cross the placenta, but fetal cells may become sensitized to antigens that do cross the placenta?

  • Innate immunity
  • Cellular immunity (correct)
  • Humoral immunity
  • Passive immunity

    • Which antibody classes do not cross the placenta and require an antigenic challenge for production?

  • IgA, IgD, IgE, IgM (correct)
  • IgG, IgA, IgM, IgE
  • IgG, IgA, IgD, IgE
  • IgG, IgM, IgD, IgE

    • What is the primary function of passively filtering plasma for bacteria or foreign material?

    <p>To remove harmful substances</p> Signup and view all the answers

    How do infant B cells respond to infection compared to adults?

    <p>They respond less effectively</p> Signup and view all the answers

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