Question 1

Briefly explain the role of complement proteins.

Accepted Answer

The complement proteins of the complemen...

Question 2

Provide a plausible explanation for the increased incidence of cancer in the elderly.

Accepted Answer

The increased incidence of can...

Question 3

________ are clusters of lymphoid nodules deep to the epithelial lining of the small intestine.

Accepted Answer

A)  Tonsils
B)  Adenoids
C)  Peyer's patches
D)  Immune complexes
E)  Lymph glandsF) A) and E)
G) A) and B)

Question 4

B cells are primarily activated by the activities of

Accepted Answer

A)  antigens.
B)  antibodies.
C)  helper T cells.
D)  macrophages.
E)  plasma cells.F) C) and E)
G) All of the above

Question 5

Defense of the body against a particular pathogen is provided by

Accepted Answer

A)  nonspecific immunity.
B)  specific immunity.
C)  immunological surveillance.
D)  skin defenses.
E)  fever.F) A) and C)
G) A) and B)

Question 6

Which cells produce antibodies?

Accepted Answer

A)  cytotoxic T cells
B)  helper T cells
C)  natural killer cells
D)  memory B cells
E)  plasma cellsF) A) and E)
G) A) and B)

Question 7

Identify the three major types of T cells activated by class I MHC proteins.

Accepted Answer

A)  plasma T cells,memory T cells,and cytotoxic T cells
B)  cytotoxic T cells,memory T cells,and regulatory T cells
C)  memory T cells,regulatory T cells,and plasma T cells
D)  NK T cells,cytotoxic T cells,and helper T cells
E)  helper T cells,regulatory T cells,and memory T cellsF) A) and B)
G) A) and C)

Question 8

If the thymus shrank and stopped functioning properly,we would expect to see an immediate decrease in the number of

Accepted Answer

A)  B lymphocytes.
B)  NK cells.
C)  T cells.
D)  neutrophils.
E)  NK cells and T cells.F) B) and E)
G) A) and D)

Question 9

Lymphocytes

Accepted Answer

A)  are all 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) A) and B)

Question 10

How does innate immunity protect us from disease?

Accepted Answer

Innate immunity protects us from disease...

Question 11

What effect do pyrogens have in the body?

Accepted Answer

A)  Pyrogens decrease body temperature.
B)  Pyrogens induce fever,an increase in body temperature.
C)  Pyrogens cause vasodilation during inflammatory reactions.
D)  Pyrogens cause vasoconstriction during inflammatory reactions.
E)  Pyrogens induce the production of anti-viral proteins in the cytoplasm of normal cells.F) C) and D)
G) A) and B)

Question 12

Describe inflammation.

Accepted Answer

A)  Inflammation is an increase in body temperature.
B)  Inflammation is a vascular response to injury to cause vasoconstriction and reduce blood loss.
C)  Inflammation is a localized response to injury characterized by redness,swelling,heat,and pain.
D)  Inflammation is the response of chemical messengers that coordinate defense against viral infections.
E)  Inflammation is the mechanism by which NK cells destroy abnormal cells in peripheral tissues.F) A) and B)
G) All of the above

Question 13

Which of the following statements regarding lymph is false?

Accepted Answer

A)  Lymph derived from interstitial fluid.
B)  Lymphatic vessels have valves to direct fluid flow.
C)  Lymphatic capillaries have larger diameters than blood capillaries.
D)  Lacteals are prominent lymphatic vessels in the respiratory system.
E)  Lymphatic capillaries have little or no basement membrane.F) A) and B)
G) B) and E)

Question 14

What is anaphylaxis?

Accepted Answer

A)  Anaphylaxis is a normal immune response to an allergen,which is an antigen that triggers an allergic reaction.
B)  Anaphylaxis is a condition that results from the production of antibodies directed against normal antigens in the body.
C)  Anaphylaxis is an inadequate immune responses due to problems with embryonic development of lymphoid organs and tissues,a viral infection,or treatment with or exposure to immunosuppressive agents.
D)  Anaphylaxis is an immune response to a circulating antigen that stimulates mast cells throughout the body to release chemicals that prompt the inflammatory response.
E)  Anaphylaxis is the excessive immune reaction of antibodies to a virus-infected cell.F) A) and E)
G) C) and D)

Question 15

Beginning at the trabecular arteries,trace the path of blood through the spleen.

Accepted Answer

A)  trabecular arteries - reticular tissue of red pulp - central arteries - sinusoids - capillaries - trabecular veins
B)  trabecular arteries - sinusoids - central arteries - capillaries - reticular tissue of red pulp - trabecular veins
C)  trabecular arteries - central arteries - capillaries - reticular tissue of red pulp - sinusoids - trabecular veins
D)  trabecular arteries - capillaries - trabecular veins - sinusoids - central arteries - reticular tissue of red pulp
E)  trabecular arteries - central arteries - reticular tissue of red pulp - sinusoids - capillaries - trabecular veinsF) A) and E)
G) A) and C)

Question 16

T cells release cytokines to stimulate the activation of

Accepted Answer

A)  APCs.
B)  B cells.
C)  antibodies.
D)  immunoglobulins.
E)  plasma cells.F) D) and E)
G) C) and E)

Question 17

Fever is the maintenance of body temperature higher than

Accepted Answer

A)  37.2°C.
B)  99°F.
C)  98.6°F.
D)  either 37.2°C or 98.6°F.
E)  either 37.2°C or 99°F.F) A) and B)
G) A) and C)

Question 18

All of the following are true of the secondary response to antigen exposure except that it

Accepted Answer

A)  depends on memory B cells.
B)  results in much higher antibody titers than in the primary response.
C)  results in much quicker rise in antibody titers.
D)  produces more IgG antibodies.
E)  weakens quickly because memory B cells only survive for a year or two.F) C) and E)
G) A) and D)

Question 19

Leslie has a bad sore throat,and the lymph glands in her neck are swollen.This would indicate that

Accepted Answer

A)  the focus of the infection is the lymph glands.
B)  lymph is not flowing through these lymph glands.
C)  the affected lymph glands contain an increased number of lymphocytes.
D)  the lymph gland is actively producing phagocytes.
E)  the lymph gland has increased its secretion of thymosin.F) A) and D)
G) C) and D)

Question 20

A crime scene investigator found that a biological fluid sample contains a large amount of IgA-type antibody.This fluid is probably

Accepted Answer

A)  blood.
B)  lymph.
C)  serum.
D)  tears.
E)  interstitial.F) A) and B)
G) A) and C)

Exam 20: The Lymphatic System and Immunity

Fever is the maintenance of body temperature higher than

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Defense of the body against a particular pathogen is provided by

Correct AnswerverifiedShow Answer

B cells are primarily activated by the activities of

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Leslie has a bad sore throat,and the lymph glands in her neck are swollen.This would indicate that

Correct AnswerverifiedShow Answer

Which of the following statements regarding lymph is false?

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What effect do pyrogens have in the body?

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If the thymus shrank and stopped functioning properly,we would expect to see an immediate decrease in the number of

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Lymphocytes

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Which cells produce antibodies?

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Describe inflammation.

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How does innate immunity protect us from disease?

Correct AnswerverifiedInnate immunity protects us from disease...View AnswerShow Answer

________ are clusters of lymphoid nodules deep to the epithelial lining of the small intestine.

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Provide a plausible explanation for the increased incidence of cancer in the elderly.

Correct AnswerverifiedThe increased incidence of can...View AnswerShow Answer

A crime scene investigator found that a biological fluid sample contains a large amount of IgA-type antibody.This fluid is probably

Correct AnswerverifiedShow Answer

All of the following are true of the secondary response to antigen exposure except that it

Correct AnswerverifiedShow Answer

What is anaphylaxis?

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T cells release cytokines to stimulate the activation of

Correct AnswerverifiedShow Answer

Identify the three major types of T cells activated by class I MHC proteins.

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Briefly explain the role of complement proteins.

Correct AnswerverifiedThe complement proteins of the complemen...View AnswerShow Answer

Beginning at the trabecular arteries,trace the path of blood through the spleen.

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Correct Answer
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Innate immunity protects us from disease...
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The increased incidence of can...
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Correct Answer
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The complement proteins of the complemen...
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