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Med Surg - Exam #3 NCLEX Style Questions with correct answers
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Med Surg - Exam #3 NCLEX Style Questions with correct answers
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Med Surg - Exam #3 NCLEX Style Questions withcorrect answers
The function of monocytes in immunity is related to their ability to...
A. stimulate the production of T and B lymphocytes.
B. produce antibodies on exposure to foreign substances.
C. bind antigens and stimulate natural killer cell activation.
D. capture antigens by phagocytosis and present them to lymphocytes.
Correct Answer-D
Rationale: The mononuclear phagocyte system includes monocytes in
the blood and macrophages found throughout the body. Mononuclear
phagocytes have a critical role in the immune system. They are
responsible for capturing, processing, and presenting the antigen to the
lymphocytes.
One function of cell-mediated immunity is...
A. formation of antibodies.
B. activation of the complement system.
,C. surveillance for malignant cell changes.
D. opsonization of antigens to allow phagocytosis by neutrophils.
Correct Answer-C
Rationale: One role of cell-mediated immunity is immune surveillance
to detect any malignant changes in cells and then destroy them
The reason newborns are protected for the first 6 months of life from
bacterial infections is because of the maternal transmission of...
A. IgG.
B. IgA.
C. IgM.
D. IgE. Correct Answer-A
Rationale: Immunoglobulin G (IgG) crosses the placental membrane and
provides the newborn with passive acquired immunity for at least 3
months. Infants also may obtain some passive immunity from
immunoglobulin A (IgA) in breast milk and colostrum.
, In a type I hypersensitivity reaction the primary immunologic disorder
appears to be
A. binding of IgG to an antigen on a cell surface.
B. deposit of antigen-antibody complexes in small vessels.
C. release of cytokines used to interact with specific antigens.
D. release of chemical mediators from IgE-bound mast cells and
basophils. Correct Answer-D
Rationale: Type I hypersensitivity reactions occur only in susceptible
persons who are highly sensitized to specific allergens. Immunoglobulin
E (IgE) antibodies, produced in response to the allergen, have a
characteristic property of attaching to mast cells and basophils.
The nurse is alerted to possible anaphylactic shock immediately after a
patient has received intramuscular penicillin by the development of
A. edema and itching at the injection site.
B. sneezing and itching of the nose and eyes.
C. a wheal-and-flare reaction at the injection site.
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