Question 1

Match the term with the appropriate description.
-histamine

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) None of the above
G) A) and E)

Question 2

Which of the following is a subpopulation of T cells?

Accepted Answer

A)  cytotoxic
B)  antigenic
C)  cytokinetic
D)  basophilic
E)  antitoxicF) B) and D)
G) A) and B)

Question 3

Lymph exits a lymph node via the

Accepted Answer

A)  efferent lymphatic vessels.
B)  afferent lymphatic vessels.
C)  cortical sinuses.
D)  trabeculae.
E)  lymphatic duct.F) B) and E)
G) C) and E)

Question 4

Match the type of cell with its function.
-mast cell

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 inflammation,F) A) and D)
G) C) and D)

Question 5

Which of the following characteristics is/are most consistent with adaptive immunity?

Accepted Answer

A)  constant response to each exposure
B)  specificity
C)  memory
D)  increased response to second and subsequent exposures
E)  specificity,memory and increased response to second and subsequent exposuresF) B) and C)
G) A) and D)

Question 6

A surface chemical that prevents microbial growth is

Accepted Answer

A)  histamine.
B)  leukotriene.
C)  sebum.
D)  kinin.
E)  interferon.F) A) and D)
G) B) and D)

Question 7

The HIV virus can be transmitted

Accepted Answer

A)  only from males to other males.
B)  during unprotected sexual intercourse.
C)  by coughing or sneezing.
D)  by contact with people at work.
E)  by hugging an infected child.F) None of the above
G) B) and D)

Question 8

The effects of cell-mediated immunity are the result of activities of

Accepted Answer

A)  B cells.
B)  cytotoxic T cells.
C)  macrophages.
D)  dendritic cells.
E)  helper T cells.F) None of the above
G) B) and E)

Question 9

Which of the following organs does NOT contain lymphatic tissue?

Accepted Answer

A)  liver
B)  spleen
C)  lingual tonsils
D)  thymus
E)  pharyngeal tonsils.F) A) and E)
G) None of the above

Question 10

Lymphocyte activation can occur in several ways.However,in all cases

Accepted Answer

A)  lymphocytes must recognize an antigen.
B)  helper T cells are activated first and they then stimulate other cells.
C)  antigen-presenting cells process the antigen and present it to the lymphocytes.
D)  cytokines released by the antigen stimulate the lymphocyte response.
E)  antigens must be able to recognize the lymphocytes.F) C) and D)
G) A) and B)

Question 11

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) C) and E)
G) A) and B)

Question 12

Stimulating the proliferation of cytotoxic T cells to destroy cancer cells is an example of

Accepted Answer

A)  immunotherapy.
B)  immunocompetence.
C)  tolerance.
D)  passive artificial acquired immunity.
E)  passive natural acquired immunity.F) A) and B)
G) C) and D)

Question 13

Adaptive immunity is stimulated by

Accepted Answer

A)  antigens.
B)  histamines.
C)  antibodies.
D)  complement.
E)  plasma proteins.F) A) and E)
G) A) and D)

Question 14

Match the term or description to the type of hypersensitivity.
-anaphylaxis

Accepted Answer

A)  immediate hypersensitivity
B)  delayed hypersensitivityC) A) and B)
D) undefined

Question 15

Which of the following cytokines is mismatched?

Accepted Answer

A)  perforin - makes a hole in target cell membranes
B)  alpha interferon - prevents viral replication
C)  lymphotoxin - costimulator of T cells
D)  interleukin 4 - plays a role in allergic reactions
E)  TNF - activates macrophages and promotes feverF) All of the above
G) A) and E)

Question 16

The thymus is where ____ mature and become functional immune cells.

Accepted Answer

A)  pre-T cells
B)  pre-B cells
C)  macrophages
D)  null cells
E)  C cells.F) B) and E)
G) None of the above

Question 17

Lymph movement is assisted by

Accepted Answer

A)  contraction of skeletal muscle.
B)  contraction of smooth muscle in lymph vessel.
C)  pressure changes in the thorax during respiration.
D)  compression of lymphatic vessels.
E)  All of these choices are correct.F) A) and C)
G) A) and B)

Question 18

Tolerance is a state of

Accepted Answer

A)  hypersensitivity.
B)  transplant rejection.
C)  unresponsiveness to antigens.
D)  responding to self-antigens.
E)  non-recognition of antigens.F) C) and D)
G) All of the above

Question 19

Antibodies secreted in breast milk

Accepted Answer

A)  are IgG antibodies.
B)  are IgA antibodies.
C)  provide natural active adaptive immunity.
D)  include the cytokine interleukin 2.
E)  promote inflammation.F) A) and B)
G) B) and D)

Question 20

The movement of leukocytes to the source of certain chemicals is called

Accepted Answer

A)  chemotaxis.
B)  opsonization.
C)  chemoreception.
D)  phagocytosis.
E)  hemolysis.F) B) and C)
G) A) and D)

Exam 22: Lymphatic System and Immunity

Lymph exits a lymph node via the

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When innate immunity is activated,

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Match the type of cell with its function. -mast cell

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Match the term or description to the type of hypersensitivity. -anaphylaxis

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Match the term with the appropriate description. -histamine

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Tolerance is a state of

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The thymus is where ____ mature and become functional immune cells.

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Lymph movement is assisted by

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Stimulating the proliferation of cytotoxic T cells to destroy cancer cells is an example of

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Which of the following organs does NOT contain lymphatic tissue?

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Which of the following characteristics is/are most consistent with adaptive immunity?

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A surface chemical that prevents microbial growth is

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Lymphocyte activation can occur in several ways.However,in all cases

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Adaptive immunity is stimulated by

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Which of the following cytokines is mismatched?

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Antibodies secreted in breast milk

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The movement of leukocytes to the source of certain chemicals is called

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The effects of cell-mediated immunity are the result of activities of

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Which of the following is a subpopulation of T cells?

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The HIV virus can be transmitted

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