Pathophysiology Exam 3
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1. Explain how the skin's physical barrier makes it inhos- It has closely packed cells
pitable to microorganisms. in multiple layers that are
continuously being shed.
Keratin covers the skin,
which creates a salty,
acidic environment inhos-
pitable to microbes. It
also contains antimicrobial
proteins and lysozymes
that inhibit microorgan-
isms and help to destroy
them.
2. Which cells serve an important role innate and adap- Dendritic cells
tive immunity?
Natural killer cells
Neutrophils
Dendritic cells
You Answered Lymphocytes
3. Which cell is the master regulator of the immune sys- CD4 T cells
tem?
CD4 T cells
CD8 T cells
Macrophages
Neutrophils
4. T lymphocytes produce what type of immunity? Cell-mediated
5. Which immunoglobulin provides local immunity on IgA
mucosal surfaces?
IgA
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