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Lymphocytes


A) are actively phagocytic.
B) destroy red blood cells.
C) respond to antigens.
D) are primarily found in red bone marrow.
E) decrease in number during infection.

F) B) and E)
G) C) and D)

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You are a researcher interested in studying the cytoskeleton.How can you use antibodies to locate actin- and tubulin-containing structures?

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Since those cytoskeletal components are ...

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Helper T cells do all of the following,except


A) trigger B-cell division,plasma cell maturation,and antibody production.
B) provide a rapid response to a future exposure to the antigen.
C) enhance production of memory and cytotoxic T cells.
D) attract macrophages to the affected area.
E) enhance nonspecific defenses.

F) A) and B)
G) All of the above

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When an antigen is bound to a Class II MHC protein,it can activate a ________ cell.


A) plasma
B) helper T
C) NK
D) suppressor T
E) cytotoxic T

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

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The cells responsible for humoral immunity are the ________ cells.


A) NK
B) B
C) helper T
D) cytotoxic T
E) suppressor T

F) C) and E)
G) B) and C)

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Infection with the HIV virus occurs through


A) eating contaminated food.
B) airborne droplets from coughs and sneezes.
C) intimate contact with an infected person's body fluids.
D) casual contact with an infected individual.
E) sharing clothes with an infected individual.

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

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Stem cells that can form all types of lymphocytes are concentrated in the


A) circulation.
B) thymus.
C) red marrow.
D) spleen.
E) yellow marrow.

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

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Immunity that is genetically determined and present at birth is called ________ immunity.


A) active
B) natural passive
C) passive
D) auto
E) innate

F) None of the above
G) B) and C)

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In an experimental situation,a rabbit is exposed to a viral antigen to which it makes antibodies.These antibodies are then purified and injected into a human with the same viral disease.This is an example of


A) innate immunity.
B) active immunization.
C) passive immunization.
D) natural immunity.
E) alloimmunity.

F) A) and E)
G) B) and E)

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Dividing lymphocytes can be found in the ________ of the lymphatic nodule.


A) sinus
B) germinal center
C) cortex
D) capsule
E) stromba

F) B) and E)
G) None of the above

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Lymphocyte production involves


A) bone marrow.
B) thymus tissue.
C) peripheral lymphatic tissues.
D) stem cells.
E) All of the answers are correct.

F) C) and D)
G) B) and E)

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Immunoglobulins that attach to and sensitize mast cells and basophils are


A) IgA.
B) IgD.
C) IgE.
D) IgG.
E) IgM.

F) A) and B)
G) B) and E)

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Class II MHC molecules are found only on which of the following?


A) all body cells with a nucleus
B) red blood cells
C) granulocytes and microphages
D) lymphocytes and antigen-presenting cells
E) liver cells and macrophages in the spleen

F) B) and E)
G) None of the above

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Immunoglobulins that are found on the surface of B cells and may activate antibody production are


A) IgA.
B) IgD.
C) IgE.
D) IgG.
E) IgM.

F) A) and E)
G) B) and D)

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Lymphatic tissues are connective tissues dominated by ________.

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   Figure 22-1 The Structure of a Lymph Node Use Figure 22-1 to answer the following question: -Identify the structure labeled  6.  A) medulla B) inner cortex C) outer cortex D) trabeculae E) cortical sinus Figure 22-1 The Structure of a Lymph Node Use Figure 22-1 to answer the following question: -Identify the structure labeled "6."


A) medulla
B) inner cortex
C) outer cortex
D) trabeculae
E) cortical sinus

F) A) and B)
G) B) and C)

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Lymph nodes do all of the following,except that they


A) produce antibodies.
B) monitor the contents of lymph.
C) remove debris and pathogens from the lymph.
D) accumulate cancer cells.
E) remove excess nutrients from the lymph.

F) B) and D)
G) C) and D)

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Microglia are to the CNS as Kupffer cells are to the ________.

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T is to ________ as B is to ________.


A) top; bottom
B) thymus-dependent; bone marrow-derived
C) thyroid; bowel
D) non-thymus-dependent; bottom
E) trabeculae; bursa

F) D) and E)
G) B) and D)

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Fever is the maintenance of body temperature greater than


A) 105°F.
B) 99°F.
C) 98.6°F.
D) 102°F.
E) 99.5°F.

F) B) and E)
G) C) and D)

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