Question 1

All of the following are true of the thymus gland except that it

Accepted Answer

A)  activates B cells.
B)  reaches its greatest relative size during the second year of life.
C)  involutes after puberty.
D)  produces T cells.
E)  lies in the anterior mediastinum.F) None of the above
G) C) and E)

Question 2

Plasma contains ________ special proteins that form the complement system.

Accepted Answer

A)  about 3
B)  exactly 10
C)  roughly 18
D)  exactly 25
E)  more than 30F) A) and B)
G) All of the above

Question 3

The lymphatic system does all of the following except

Accepted Answer

A)  helps maintain normal blood volume.
B)  transports gases to and away from lymph nodes.
C)  eliminates variations in the composition of interstitial fluid.
D)  transports lipids from the digestive tract.
E)  fights infection.F) A) and D)
G) A) and C)

Question 4

The term immunological ________ refers to the ability to demonstrate an immune response upon exposure to an antigen.

Accepted Answer

A)  determination
B)  readiness
C)  competence
D)  potency
E)  driveF) A) and E)
G) All of the above C

Question 5

The primary function of the lymphatic system is

Accepted Answer

A)  the transport of hormones.
B)  circulation of nutrients and dissolved gases.
C)  defending the body against both external and internal threats.
D)  the production and distribution of plasma proteins.
E)  the production and maturation of leukocytes.F) C) and D)
G) A) and B)

Question 6

Lymph nodes do all of the following except

Accepted Answer

A)  produce antibodies through B cells.
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) A) and B)
G) B) and D) E

Question 7

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

Accepted Answer

A)  sinus regions
B)  germinal center
C)  cortical layer
D)  capsular space
E)  stromaF) D) and E)
G) A) and B)

Question 8

Lymph nodes range in diameter from

Accepted Answer

A)  1 nm to 10 nm.
B)  1 inch to 2 inches.
C)  1 mm to 25 mm.
D)  1 cm to 25 cm.
E)  1 cm to 1 inch.F) B) and C)
G) A) and B)

Question 9

Examples of physical barriers against pathogens include

Accepted Answer

A)  sebaceous glands.
B)  mucus.
C)  epithelia.
D)  epidermal layers.
E)  All of the answers are correct.F) C) and D)
G) B) and E)

Question 10

The cells responsible for humoral immunity are the ________ cells.

Accepted Answer

A)  NK
B)  B
C)  helper T
D)  cytotoxic T
E)  suppressor TF) B) and E)
G) A) and E)

Question 11

If the thymus shrank and stopped making thymosins,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)  red blood cells.F) A) and D)
G) C) and D)

Question 12

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

Accepted Answer

A)  circulation.
B)  thymus.
C)  red bone marrow.
D)  spleen.
E)  yellow marrow.F) B) and D)
G) A) and B)

Question 13

The immune system is said to exhibit ________ toward those agents that do not stimulate an immune response.

Accepted Answer

A)  immunity
B)  memory
C)  adaptation
D)  tolerance
E)  versatilityF) A) and E)
G) B) and D)

Question 14

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

Accepted Answer

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

Question 15

An inflammatory response is triggered when

Accepted Answer

A)  red blood cells release pyrogens.
B)  T cells release interferon.
C)  mast cells release histamine and heparin.
D)  neutrophils phagocytize bacteria.
E)  blood flow to an area increases.F) B) and E)
G) All of the above C

Question 16

The process by which soluble antigens combine with antibodies to form insoluble immune complexes is called

Accepted Answer

A)  opsonization.
B)  activation.
C)  agglutination.
D)  precipitation.
E)  neutralization.F) B) and D)
G) All of the above

Question 17

The body's innate defenses include all of the following except

Accepted Answer

A)  the skin.
B)  complement.
C)  interferon.
D)  inflammation.
E)  antibodies.F) B) and E)
G) None of the above

Question 18

________ are clusters of lymphatic 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) B) and E)
G) B) and D)

Question 19

Which of the following about MHC proteins is false?

Accepted Answer

A)  bind complement
B)  allow the body to differentiate its own cells from foreign cells
C)  function in antigen presentation
D)  fall into two major classes
E)  are found on all nucleated cellsF) A) and B)
G) A) and E)

Question 20

Immunity that results from exposure to an antigen in the environment is called ________ immunity.

Accepted Answer

A)  naturally acquired active
B)  natural passive
C)  passively acquired
D)  automatically acquired
E)  innateF) C) and D)
G) None of the above

Exam 22: The Lymphatic System and Immunity

All of the following are true of the thymus gland except that it

Correct AnswerverifiedShow Answer

Plasma contains ________ special proteins that form the complement system.

Correct AnswerverifiedShow Answer

The lymphatic system does all of the following except

Correct AnswerverifiedShow Answer

The term immunological ________ refers to the ability to demonstrate an immune response upon exposure to an antigen.

Correct AnswerverifiedC

The primary function of the lymphatic system is

Correct AnswerverifiedShow Answer

Lymph nodes do all of the following except

Correct AnswerverifiedE

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

Correct AnswerverifiedShow Answer

Lymph nodes range in diameter from

Correct AnswerverifiedShow Answer

Examples of physical barriers against pathogens include

Correct AnswerverifiedShow Answer

The cells responsible for humoral immunity are the ________ cells.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

The immune system is said to exhibit ________ toward those agents that do not stimulate an immune response.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

An inflammatory response is triggered when

Correct AnswerverifiedC

The process by which soluble antigens combine with antibodies to form insoluble immune complexes is called

Correct AnswerverifiedShow Answer

The body's innate defenses include all of the following except

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which of the following about MHC proteins is false?

Correct AnswerverifiedShow Answer

Immunity that results from exposure to an antigen in the environment is called ________ immunity.

Correct AnswerverifiedShow Answer

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C

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