Week Three Quiz
NSCI/281 Version 5
University of Phoenix Material
Week Three Quiz
Chapter 22 Lymphatic System and Immunity
1. The lymphatic system differs from the cardiovascular system in that
a.
b.
c.
d.
e.
the lymphatic system only carries fluid away from tissues.
the lymphatic vessels have their own "pump" to assist flow.
lymph capillaries do not contain any fluid.
lymph capillaries allow free movement of fluid in and out of the capillaries.
lymph circulates fluids and cardiovascular does not.
2. The palatine tonsils
a.
b.
c.
d.
e.
interfere with breathing when enlarged.
are located at the junction of the oral cavity and pharynx.
are located superior to the palate.
are really lymph nodes in disguise.
are located in the nasopharynx.
3. Which of the following would be classified as an innate mechanical mechanism?
a.
b.
c.
d.
e.
activation of complement
phagocytosis of invading organisms
washing action of tears and saliva
inflammation
release of histamine
4. Which of the following is usually the first cell type to leave the blood and enter
infected tissues?
a.
b.
c.
d.
e.
eosinophil
lymphocyte
monocyte
natural killer cell
neutrophil
5. Transplanted tissues and organs that contain _________ _________ are rejected by
the body.
a.
b.
c.
d.
e.
self antigens
foreign antigens
foreign antibodies
auto antigens
plasma proteins
6. The MHC class I antigen complex displays a foreign antigen on the cell surface.
This prompts the immune system to destroy
a. B cell clones.
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Week Three Quiz
NSCI/281 Version 5
b.
c.
d.
e.
extracellular antigens.
the displaying cell.
mature red blood cells.
the virus inside the cell, but not the cell.
7. Once cytotoxic T cells are produced, which of the following is (are) consistent with
their ability to attack intracellular viruses?
a. Most nucleated cells process antigens through the MHC class I mechanisms.
b. Viral antigens are processed by the MHC class I mechanism and are presented
to the cell surface.
c. Cytotoxic T cells bind to MHC class I processed antigens.
d. Cytotoxic T cells bound to the MHC class I processed antigens release
lymphokines.
e. All of these choices are correct.
8. Cytotoxic T cells
a.
b.
c.
d.
e.
produce antibodies for general circulation.
attach to the surface of cells causing them to lyse.
cause precipitation of antigens.
have IgG antibodies on their cell membranes.
are destroyed after contact killing.
9. Which of the following is false?
a.
b.
c.
d.
e.
The HIV virus binds to the CD4 molecule of host cells.
There is currently only one cure for AIDS - AZT.
Most manifestations of AIDS are explained by the loss of helper T cell functions.
Once infected by the virus, a person will test positive for HIV antibodies.
In order for HIV to replicate, viral RNA is used to make viral DNA, which is
inserted into the host cell's DNA.
10. An abnormal, exaggerated response of the immune system is called
a.
b.
c.
d.
e.
immunization.
an innate immune response.
hypersensitivity.
excess immunity.
tolerance.
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Week Three Quiz
NSCI/281 Version 5
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