Question 1

Cytotoxic T (TC)  cells are like natural killer (NK)  cells because they both

Accepted Answer

A)  secrete interferons.
B)  secrete granzymes and perforin.
C)  participate in the immune response.
D)  participate in nonspecific resistance.
E)  secrete tumor necrosis factor (TNF) .F) A) and B)
G) A) and C)

Question 2

Lymph is similar to blood plasma, but very low in

Accepted Answer

A)  protein.
B)  carbon dioxide.
C)  metabolic waste.
D)  electrolytes.
E)  sodium and potassium.F) A) and C)
G) A) and B) A

Question 3

Cellular (cell-mediated)  immunity is effective against

Accepted Answer

A)  allergens.
B)  venoms.
C)  cancer cells.
D)  extracellular viruses.
E)  toxins.F) D) and E)
G) A) and C)

Question 4

These are a group of proteolytic enzymes secreted by natural killer (NK)  cells.

Accepted Answer

A)  selectins
B)  cytokines
C)  granzymes
D)  perforins
E)  interferonsF) A) and E)
G) C) and D)

Question 5

Clonal selection of T cells happens in the thymus.

Accepted Answer

A) True 
 B)False

Question 6

A pyrogen is a substance that causes

Accepted Answer

A)  inflammation.
B)  opsonization.
C)  complement fixation.
D)  cytolysis.
E)  fever.F) A) and E)
G) A) and B)

Question 7

Mucous membranes prevent most pathogens from entering the body because of the stickiness of the
mucus and the presence of lysozymes.

Accepted Answer

A) True 
 B)False

Question 8

Memory B cells are found circulating mainly in the lymph.

Accepted Answer

A) True 
 B)False

Question 9

Basophils of the blood help to get defensive leukocytes to the site quickly by releasing an anticoagulant called and a vasodilator called .

Accepted Answer

A)  bradykinin; histamine
B)  selectin; prostaglandin
C)  histamine; heparin
D)  heparin; histamine
E)  prostaglandins; selectinF) A) and B)
G) All of the above D

Question 10

Before B cells secrete antibodies they differentiate into

Accepted Answer

A)  stem cells.
B)  antigen-presenting cells.
C)  plasma cells.
D)  T cells.
E)  macrophages.F) All of the above
G) C) and E)

Question 11

are secreted by cells infected with viruses, alerting neighboring cells and protecting them from becoming infected.

Accepted Answer

A)  Complement system globulins
B)  Interferons
C)  Granzymes
D)  Pyrogens
E)  PerforinsF) All of the above
G) A) and E) B

Question 12

Helper T cells respond only to epitopes attached to MHC proteins.

Accepted Answer

A) True 
 B)False

Question 13

Immune surveillance is a process in which nonspecifically detect and destroy foreign cells and diseased host cells.

Accepted Answer

A)  T lymphocytes (T cells) 
B)  reticular cells
C)  dendritic cells
D)  macrophages
E)  natural killer (NK)  cellsF) C) and E)
G) C) and D)

Question 14

All these belong to the second line of defense except

Accepted Answer

A)  the macrophage system.
B)  natural killer cells.
C)  inflammation.
D)  the gastric juices.
E)  interferon and the complement system.F) B) and D)
G) All of the above

Question 15

is not a cardinal sign characteristic of inflammation.

Accepted Answer

A)  Impaired use
B)  Redness
C)  Pain
D)  Heat
E)  SwellingF) All of the above
G) C) and D)

Question 16

Red bone marrow is the point of origin of all immune cells of the lymphatic system.

Accepted Answer

A) True 
 B)False

Question 17

Cytotoxic T cells respond only to antigens bound to MHC-I proteins.

Accepted Answer

A) True 
 B)False

Question 18

All these forces help lymph to flow except

Accepted Answer

A)  rhythmic contractions of lymphatic vessels.
B)  the thoracic pump.
C)  the skeletal muscle pump.
D)  the lymphatic node pump.
E)  arterial pulsations squeezing lymphatic vessels.F) A) and E)
G) B) and E)

Question 19

The serum used for emergency treatment of snakebites stimulates

Accepted Answer

A)  artificial passive immunity.
B)  artificial active immunity.
C)  natural passive immunity.
D)  natural active immunity.
E)  artificial specific immunity.F) C) and E)
G) A) and E)

Question 20

Antigen-presenting cells usually display processed antigens to T cells in

Accepted Answer

A)  plasma.
B)  lymph nodes.
C)  thymus.
D)  red bone marrow.
E)  liver.F) A) and C)
G) D) and E)

Exam 21: The Lymphatic and Immune Systems

Cytotoxic T (TC) cells are like natural killer (NK) cells because they both

Correct AnswerverifiedShow Answer

Lymph is similar to blood plasma, but very low in

Correct AnswerverifiedA

Cellular (cell-mediated) immunity is effective against

Correct AnswerverifiedShow Answer

These are a group of proteolytic enzymes secreted by natural killer (NK) cells.

Correct AnswerverifiedShow Answer

Clonal selection of T cells happens in the thymus.

Correct AnswerverifiedShow Answer

A pyrogen is a substance that causes

Correct AnswerverifiedShow Answer

Mucous membranes prevent most pathogens from entering the body because of the stickiness of the mucus and the presence of lysozymes.

Correct AnswerverifiedShow Answer

Memory B cells are found circulating mainly in the lymph.

Correct AnswerverifiedShow Answer

Basophils of the blood help to get defensive leukocytes to the site quickly by releasing an anticoagulant called and a vasodilator called .

Correct AnswerverifiedD

Before B cells secrete antibodies they differentiate into

Correct AnswerverifiedShow Answer

are secreted by cells infected with viruses, alerting neighboring cells and protecting them from becoming infected.

Correct AnswerverifiedB

Helper T cells respond only to epitopes attached to MHC proteins.

Correct AnswerverifiedShow Answer

Immune surveillance is a process in which nonspecifically detect and destroy foreign cells and diseased host cells.

Correct AnswerverifiedShow Answer

All these belong to the second line of defense except

Correct AnswerverifiedShow Answer

is not a cardinal sign characteristic of inflammation.

Correct AnswerverifiedShow Answer

Red bone marrow is the point of origin of all immune cells of the lymphatic system.

Correct AnswerverifiedShow Answer

Cytotoxic T cells respond only to antigens bound to MHC-I proteins.

Correct AnswerverifiedShow Answer

All these forces help lymph to flow except

Correct AnswerverifiedShow Answer

The serum used for emergency treatment of snakebites stimulates

Correct AnswerverifiedShow Answer

Antigen-presenting cells usually display processed antigens to T cells in

Correct AnswerverifiedShow Answer

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