Question 1

A surface chemical that prevents microbial growth is

Accepted Answer

A)   histamine.
B)   leukotriene.
C)   sebum.
D)   kinin.
E)   interferon.F) All of the above
G) C) and E)

Question 2

When innate immunity is activated,

Accepted Answer

A)   each exposure is very specific.
B)   previous exposures are remembered.
C)   each exposure produces the same response.
D)   each exposure increases the strength of the immune response.
E)   the second exposure does not produce a response.F) A) and E)
G) B) and D)

Question 3

An abnormal, exaggerated response of the immune system is called

Accepted Answer

A)   immunization.
B)   an innate immune response.
C)   hypersensitivity.
D)   excess immunity.
E)   tolerance.F) D) and E)
G) C) and D)

Question 4

Active natural immunity occurs when

Accepted Answer

A)   antibodies pass from a pregnant mother to her fetus.
B)   antibodies are injected into a host.
C)   an individual develops a disease.
D)   a person is vaccinated.
E)   antibodies are passed in breast milk.F) A) and E)
G) None of the above

Question 5

The MHC class I antigen complex displays a foreign antigen on the cell surface. This prompts the immune system to destroy

Accepted Answer

A)   B cell clones.
B)   extracellular antigens.
C)   the displaying cell.
D)   mature red blood cells.
E)   the virus inside the cell, but not the cell.F) B) and C)
G) C) and E)

Question 6

Match the term with the appropriate description.
-thymic corpuscles

Accepted Answer

A)  lipids that cause smooth muscle relaxation and vasodilation
B)  lymph nodules aggregated in the small intestinal wall
C)  rounded epithelial structures found in the medulla of thymus
D)  areas of a lymph node where lymphocytes divide
E)  a chemical released from mast cells that causes vasodilationF) C) and D)
G) B) and D)

Question 7

What areas of an antigen are recognized by lymphocytes so that they can respond?

Accepted Answer

A)   major histocompatibility complexes
B)   antigenic determinants
C)   T-cell receptors
D)   epitopes
E)   Both antigenic determinants and epitopes are correct.F) A) and D)
G) All of the above

Question 8

B-cells

Accepted Answer

A)   are a subset of T cells.
B)   when activated become plasma cells and produce antibodies.
C)   are responsible for forming all the body's memory cells.
D)   suppress the activity of T cells.
E)   mature in the thymus.F) D) and E)
G) A) and D)

Question 9

In a patient experiencing a parasitic worm infection, which of the following immune cells will greatly increase in number?

Accepted Answer

A)   mast cells
B)   eosinophils
C)   monocytes
D)   neutrophils
E)   basophilsF) A) and B)
G) A) and C)

Question 10

-What does "C" represent on the diagram?

Accepted Answer

A)   spleen
B)   thymus
C)   axillary lymph node
D)   inguinal lymph node
E)   thoracic ductF) A) and B)
G) B) and C)

Question 11

Which of the following is usually the first cell type to leave the blood and enter infected tissues?

Accepted Answer

A)   eosinophil
B)   lymphocyte
C)   monocyte
D)   natural killer cell
E)   neutrophilF) A) and B)
G) All of the above

Question 12

Peyer patches are lymphatic nodules found in the

Accepted Answer

A)   lymph nodes.
B)   spleen and tonsils.
C)   appendix and tonsils.
D)   small intestine and appendix.E) A) and B)
F) B) and D)

Question 13

Match the type of cell with its function.
-monocyte

Accepted Answer

A)  first cell to enter infected tissue
B)  will become macrophage in tissue
C)  lyses tumor and virus-infected cells
D)  cell that increases in number during a parasitic infection
E)  nonmotile cells in connective tissue that promote inflammationF) A) and C)
G) B) and C)

Question 14

Lysozyme is

Accepted Answer

A)   an enzyme found in body fluids that destroys certain bacteria.
B)   a type of antibody that attracts a phagocyte.
C)   a cytokine produced by T cells.
D)   an antigen.
E)   a bacteria.F) B) and C)
G) C) and D)

Question 15

A woman has her right breast and right axillary lymph nodes removed. Which of the following might occur?

Accepted Answer

A)   Cisterna chyli flow increases.
B)   The thoracic duct would be severed.
C)   Right lymphatic duct drainage decreases causing edema in the right arm.
D)   Lymph drainage would be affected in her left arm.
E)   Lymph drainage would be affected in both legs.F) A) and B)
G) D) and E)

Question 16

Match the appropriate characteristic with the type of immunity.
-memory cells

Accepted Answer

A)  innate immunity
B)  antibody-mediated immunity
C)  cell-mediated immunity
D)  both antibody and cell-mediated immunity
E)  innate immunity, antibody-mediated immunity and cell-mediated immunityF) B) and C)
G) A) and E)

Question 17

Which of the following is NOT a mechanism of complement action?

Accepted Answer

A)   produces cytokines
B)   opsonization
C)   attracts other immune cells to the site of infection
D)   forms a MAC that leads to cell lysisE) All of the above
F) B) and D)

Question 18

-The diagram illustrates the stimulation and effects of T cells. What does "B" represent?

Accepted Answer

A)   memory T cells
B)   cytotoxic T cells
C)   contact killing
D)   lysis of target cell
E)   release of cytokinesF) A) and B)
G) B) and D)

Question 19

Match the cell of adaptive immunity with its function.
-B cell

Accepted Answer

A)  quick and responsive to antigen, remembers previous exposure
B)  after activitaion, differentiates to become plasma cell or memory B cell
C)  produces antibodies
D)  destroys cells by lysis or by production of cytokines
E)  activates B and effector T cellsF) B) and D)
G) None of the above

Question 20

The only structures that filter lymph is/are the

Accepted Answer

A)   tonsils.
B)   spleen.
C)   lymph nodes.
D)   thymus.E) B) and D)
F) A) and B)

Exam 22: Lymphatic System and Immunity

A woman has her right breast and right axillary lymph nodes removed. Which of the following might occur?

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Which of the following is usually the first cell type to leave the blood and enter infected tissues?

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The MHC class I antigen complex displays a foreign antigen on the cell surface. This prompts the immune system to destroy

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B-cells

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-The diagram illustrates the stimulation and effects of T cells. What does "B" represent?

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Lysozyme is

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In a patient experiencing a parasitic worm infection, which of the following immune cells will greatly increase in number?

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An abnormal, exaggerated response of the immune system is called

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Match the cell of adaptive immunity with its function. -B cell

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A surface chemical that prevents microbial growth is

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The only structures that filter lymph is/are the

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When innate immunity is activated,

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Which of the following is NOT a mechanism of complement action?

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Match the appropriate characteristic with the type of immunity. -memory cells

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Peyer patches are lymphatic nodules found in the

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Active natural immunity occurs when

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Match the term with the appropriate description. -thymic corpuscles

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What areas of an antigen are recognized by lymphocytes so that they can respond?

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Match the type of cell with its function. -monocyte

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-What does "C" represent on the diagram?

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