Question 1

Lymphatic tissue contains an interlaced network of reticular fibers that functions to

Accepted Answer

A)  produce lymphocytes.
B)  produce capsules around lymph nodes.
C)  attack microorganisms.
D)  line the walls of lymphatic vessels.
E)  trap microorganisms.F) A) and B)
G) D) and E)

Question 2

Cell-mediated immunity would be least effective against

Accepted Answer

A)  tumor cells.
B)  virally infected cells.
C)  intracellular bacteria.
D)  extracellular antigens.
E)  intracellular parasites.F) A) and B)
G) A) and C)

Question 3

In immunodeficiency diseases,

Accepted Answer

A)  the immune system fails to distinguish between self-antigens and foreign antigens.
B)  inadequate B and/or T cell formation may occur.
C)  IgE mediates a localized reaction.
D)  serum sickness results.
E)  immune surveillance occurs.F) C) and E)
G) A) and D)

Question 4

MHC class II molecules are found on

Accepted Answer

A)  neutrophils,monocytes,and macrophages.
B)  dendritic cells,B cells,and helper T cells.
C)  monocytes,helper T cells,and neutrophils.
D)  B cells,macrophages,and dendritic cells.
E)  B cells,C cells and D cells.F) A) and E)
G) A) and D)

Question 5

The process of eliminating those lymphocytes that react or respond against self-antigens is called

Accepted Answer

A)  phagocytosis.
B)  inflammation.
C)  negative selection.
D)  activation of complement.
E)  natural selection.F) A) and B)
G) None of the above

Question 6

Match the appropriate characteristic with the type of immunity.
-cells mature in thymus gland

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 7

Match the term with the appropriate description.
-germinal centers

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) B) and D)
G) A) and C)

Question 8

Once cytotoxic T cells are produced,which of the following is (are) consistent with their ability to attack intracellular viruses?

Accepted Answer

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.F) A) and D)
G) A) and B)

Question 9

The key signs of inflammation include all of the following EXCEPT

Accepted Answer

A)  jaundice.
B)  pain.
C)  swelling.
D)  redness.
E)  heat.F) A) and D)
G) A) and E)

Question 10

The white pulp of the spleen

Accepted Answer

A)  contains lymphocytes that can stimulate an immune response.
B)  filters lymph as it flows through the spleen.
C)  destroys defective red blood cells.
D)  stimulates immune responses,filter lymph,and destroys defective red blood cells.E) All of the above
F) A) and D)

Question 11

Positive selection of lymphocytes refers to the

Accepted Answer

A)  processing of an antigen by a macrophage.
B)  proliferation of natural killer cells.
C)  production of antigen-specific antibodies.
D)  survival of pre-B and pre-T cells that are capable of an immune response.
E)  replication of memory cells.F) A) and B)
G) A) and C)

Question 12

Cells that process antigen and present antigens to other immune cells are called

Accepted Answer

A)  plasma cells.
B)  antigen-presenting cells.
C)  B receptor cells.
D)  T suppressor cells.
E)  antibodies.F) A) and E)
G) B) and E)

Question 13

Which of the following is NOT a function of the lymphatic system?

Accepted Answer

A)  Defending from infection caused by microorganisms and other foreign substances.
B)  Aiding in erythropoiesis of red blood cells.
C)  Maintaining fluid balance by returning excess interstitial fluid to the blood.
D)  Absorbing and transporting lipids from the digestive tract.E) None of the above
F) B) and D)

Question 14

Match the appropriate characteristic with the type of immunity.
-origin of cells is red bone marrow

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

Question 15

Which of the following most accurately describes how foreign substances can activate complement?

Accepted Answer

A)  Antibodies can bind to foreign antigens and activate complement through the classical pathway.
B)  Foreign substances can bind to spontaneously activated C3 and stabilize it.
C)  Foreign proteins bind to C1 and activate it.
D)  Foreign proteins are phagocytized by macrophages and directly activate complement.
E)  Antibodies can bind to foreign antigens and activate complement through the classical pathway and foreign substances can bind to spontaneously activated C3 and stabilize it.F) B) and E)
G) C) and E)

Question 16

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

Question 17

______ determines which B-cell is cloned in an antibody-mediated response.

Accepted Answer

A)  The antibody
B)  The antigen
C)  A macrophage
D)  Complement
E)  A neutrophilF) A) and C)
G) All of the above

Question 18

Which of the following is NOT a secondary lymphatic organ?

Accepted Answer

A)  spleen
B)  lymph node
C)  lymphatic nodule
D)  thymus glandE) B) and C)
F) A) and D)

Question 19

Several days after an initial contact with an antigen,antibody blood levels increases.This is a

Accepted Answer

A)  primer response.
B)  primary response.
C)  precipitating response.
D)  principle response.
E)  cascade response.F) B) and D)
G) B) and C)

Question 20

Which of the following statements concerning neutrophils and macrophages is false?

Accepted Answer

A)  They both exhibit chemotaxis.
B)  They both move by amoeboid motion.
C)  Both are capable of phagocytosis.
D)  Both release histamine when activated.
E)  Both can squeeze between cells.F) A) and D)
G) All of the above

Exam 22: Lymphatic System and Immunity

Several days after an initial contact with an antigen,antibody blood levels increases.This is a

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The process of eliminating those lymphocytes that react or respond against self-antigens is called

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Cell-mediated immunity would be least effective against

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In immunodeficiency diseases,

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The key signs of inflammation include all of the following EXCEPT

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Match the type of cell with its function. -monocyte

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Positive selection of lymphocytes refers to the

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Match the term with the appropriate description. -germinal centers

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MHC class II molecules are found on

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Once cytotoxic T cells are produced,which of the following is (are) consistent with their ability to attack intracellular viruses?

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Cells that process antigen and present antigens to other immune cells are called

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Match the appropriate characteristic with the type of immunity. -cells mature in thymus gland

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Which of the following most accurately describes how foreign substances can activate complement?

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The white pulp of the spleen

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Which of the following statements concerning neutrophils and macrophages is false?

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______ determines which B-cell is cloned in an antibody-mediated response.

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Match the appropriate characteristic with the type of immunity. -origin of cells is red bone marrow

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Lymphatic tissue contains an interlaced network of reticular fibers that functions to

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Which of the following is NOT a secondary lymphatic organ?

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Which of the following is NOT a function of the lymphatic system?

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