Transcript Chapter 12 Lymphatic System and Body Defenses

ACTIVE LECTURE QUESTIONS
Barbara Hunnicutt
Seminole Community College
The Lymphatic
System and
Body Defenses
12
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Any substance capable of mobilizing our
immune system and provoking an immune
response is called a(n):
a.
b.
c.
d.
antigen.
antibody.
immunoglobulin.
hapten.
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An antigen is any substance capable of
mobilizing our immune system and provoking an
immune response. Haptens are incomplete
antigens; they cause allergies.
Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings
This lymphatic gland is larger in younger
people and is found in the anterior thorax.
a.
b.
c.
d.
Thalamus
Spleen
Thyroid
Thymus
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Thymus is larger in younger people and is found
in the anterior thorax. The thalamus is a brain
region that makes up 80% of the diencephalon.
Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings
Secreted by the macrophages, these
proteins are important in the immune
response.
a.
b.
c.
d.
Antibodies
Immunoglobulins
Cytokines
Antigens
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Cytokines are secreted by macrophages and are
important in the immune response.
Immunoglobulins (antibodies) are produced by B
cells or plasma cells.
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What is a human’s first line of defense?
a.
b.
c.
d.
Immune response
Antibodies
Intact skin
Specific
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The first line of defense in a human is intact skin
and it is a nonspecific defense; i.e., it protects
from all foreign substances, not specific ones.
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This lymphatic organ filters and cleanses
the blood and is the site of lymphocyte
proliferation.
a.
b.
c.
d.
Liver
Kidney
Spleen
Pancreas
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The spleen filters and cleanses the blood. The
spleen also destroys and breaks down worn-out
red blood cells in addition to storing platelets.
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Exposed to the wrong type foreign bacteria
for the first time, a person would:
a. have no immediate reaction.
b. have an immediate and severe reaction.
c. have an antibody response that would peak in
approximately 10 days.
d. have an antibody response that would peak in
2–3 days.
Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings
Initial exposure to the wrong type foreign
bacteria would cause an antibody response that
would peak in approximately 10 days. Second
exposure would yield a much faster response (2–
3 days) due to existence of memory cells.
Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings