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Questions and Answers
Why do IgA, IgD, IgE, and IgM not cross the placenta?
Why do IgA, IgD, IgE, and IgM not cross the placenta?
- They require an antigenic challenge for production (correct)
- Fetal cells neutralize them before they can cross
- They are actively prevented from crossing
- They are too large to pass through
At what age do phagocytic cells (neutrophils and monocytes) reach adult levels in terms of chemotaxis?
At what age do phagocytic cells (neutrophils and monocytes) reach adult levels in terms of chemotaxis?
- 7 years (correct)
- 13 years
- 11 years
- 9 years
Which immune response does not cross the placenta?
Which immune response does not cross the placenta?
- Cellular immunity (correct)
- Antibody-mediated immunity
- Inflammatory response
- Phagocytic response
Why might fetal T cells become sensitized to antigens that cross the placenta?
Why might fetal T cells become sensitized to antigens that cross the placenta?
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Why do infant B cells not respond to infection similar to adult B cells?
Why do infant B cells not respond to infection similar to adult B cells?
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