Question 1

__________ participate in both nonspecific resistance and immune response.

Accepted Answer

A)  Memory T (TM)  cells
B)  Regulatory T (TR)  cells
C)  Natural killer (NK)  cells
D)  Helper T (TH)  cells
E)  Cytotoxic T (T
C)   cellsF) C) and D)
G) A) and B)

Question 2

Which is the correct sequence of events in the humoral immune response?

Accepted Answer

A)  Antigen recognition  →\rarr→  antigen presentation  →\rarr→  differentiation  →\rarr→  clonal selection  →\rarr→  attack
B)  Antigen recognition  →\rarr→  antigen presentation  →\rarr→  clonal selection  →\rarr→  differentiation  →\rarr→  attack
C)  Antigen presentation  →\rarr→ antigen recognition  →\rarr→  clonal selection  →\rarr→  differentiation  →\rarr→  attack
D)  Antigen presentation  →\rarr→  antigen recognition  →\rarr→  clonal selection  →\rarr→  attack differentiation
E)  Antigen recognition  →\rarr→ differentiation  →\rarr→  antigen presentation  →\rarr→  clonal selection  →\rarr→  attack F) B) and E)
G) D) and E)

Question 3

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

Accepted Answer

A) True 
 B)False

Question 4

The first of a series of neutrophil behaviors in inflammation is __________.

Accepted Answer

A)  chemotaxis
B)  margination
C)  diapedesis
D)  phagocytosis
E)  opsonizationF) A) and B)
G) A) and C)

Question 5

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 potassiumF) B) and C)
G) A) and B)

Question 6

Beta cell destruction that causes type 1 diabetes mellitus is a(n) __________.

Accepted Answer

A)  anaphylactic hypersensitivity
B)  type IV (delayed)  hypersensitivity
C)  type III (immune complex)  hypersensitivity
D)  type II (antibody-dependent cytotoxic)  hypersensitivity
E)  type I (acute)  hypersensitivityF) B) and E)
G) None of the above

Question 7

Each immunoglobulin (Ig) has __________ antigen-bonding site(s) .

Accepted Answer

A)  two
B)  four
C)  six
D)  one
E)  threeF) A) and E)
G) None of the above

Question 8

A pyrogen is a substance that causes __________.

Accepted Answer

A)  inflammation
B)  opsonization
C)  complement fixation
D)  cytolysis
E)  feverF) A) and B)
G) All of the above

Question 9

Naive T cells can synthesize antibodies.

Accepted Answer

A) True 
 B)False

Question 10

T cells undergo positive selection in the thymus,which means they __________.

Accepted Answer

A)  react against self antigens
B)  develop surface antigen receptors
C)  remain alive but unresponsive
D)  die and macrophages phagocytize them
E)  multiply and form clones of identical T cellsF) A) and B)
G) A) and C)

Question 11

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

Question 12

Removal of the __________ would be more harmful to a one-year-old child than an adult.

Accepted Answer

A)  spleen
B)  lymph node
C)  thymus
D)  appendix
E)  palatine tonsilF) None of the above
G) C) and D)

Question 13

Most Memory B cells are found circulating in the lymph.

Accepted Answer

A) True 
 B)False

Question 14

Special lymphatic vessels,called lacteals,absorb dietary __________ that are not absorbed by the blood capillaries.

Accepted Answer

A)  water
B)  glucose
C)  vitamins
D)  amino acids
E)  lipidsF) A) and B)
G) A) and C)

Question 15

Memory T cells can be up to __________ old.

Accepted Answer

A)  weeks
B)  days
C)  decades
D)  years
E)  monthsF) A) and E)
G) B) and C)

Question 16

Which of the following forces does not help lymph to flow?

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 vesselsF) D) and E)
G) None of the above

Question 17

One group of proteolytic enzymes secreted by natural killer (NK) cells is __________.

Accepted Answer

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

Question 18

__________ are found especially in the mucous membrane,standing guard against parasites and allergens.

Accepted Answer

A)  Monocytes
B)  Lymphocytes
C)  Basophils
D)  Neutrophils
E)  EosinophilsF) B) and E)
G) C) and E)

Question 19

Complement C3b protein coats bacteria and stimulates phagocytosis by __________ during a process called __________.

Accepted Answer

A)  lymphocytes and monocytes; opsonization
B)  neutrophils and macrophages; cytolysis
C)  mast cells and basophils; opsonization
D)  mast cells and basophils; cytolysis
E)  neutrophils and macrophages; opsonizationF) A) and B)
G) A) and C)

Question 20

Helper T (TH) cells recognize antigens when they are bound to a(n) __________.

Accepted Answer

A)  hapten
B)  immunoglobulin
C)  natural killer cell
D)  major histocompatibility complex (MH
C)   protein
E)  basophilF) A) and B)
G) A) and E)

Exam 21: The Lymphatic and Immune Systems

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

Correct AnswerverifiedShow Answer

Complement C3b protein coats bacteria and stimulates phagocytosis by __________ during a process called __________.

Correct AnswerverifiedShow Answer

Memory T cells can be up to __________ old.

Correct AnswerverifiedShow Answer

A pyrogen is a substance that causes __________.

Correct AnswerverifiedShow Answer

One group of proteolytic enzymes secreted by natural killer (NK) cells is __________.

Correct AnswerverifiedShow Answer

Removal of the __________ would be more harmful to a one-year-old child than an adult.

Correct AnswerverifiedShow Answer

Which is the correct sequence of events in the humoral immune response?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Naive T cells can synthesize antibodies.

Correct AnswerverifiedShow Answer

__________ are found especially in the mucous membrane,standing guard against parasites and allergens.

Correct AnswerverifiedShow Answer

Each immunoglobulin (Ig) has __________ antigen-bonding site(s) .

Correct AnswerverifiedShow Answer

Beta cell destruction that causes type 1 diabetes mellitus is a(n) __________.

Correct AnswerverifiedShow Answer

Lymph is similar to blood plasma,but very low in __________.

Correct AnswerverifiedShow Answer

__________ participate in both nonspecific resistance and immune response.

Correct AnswerverifiedShow Answer

T cells undergo positive selection in the thymus,which means they __________.

Correct AnswerverifiedShow Answer

Which of the following forces does not help lymph to flow?

Correct AnswerverifiedShow Answer

The first of a series of neutrophil behaviors in inflammation is __________.

Correct AnswerverifiedShow Answer

Most Memory B cells are found circulating in the lymph.

Correct AnswerverifiedShow Answer

Special lymphatic vessels,called lacteals,absorb dietary __________ that are not absorbed by the blood capillaries.

Correct AnswerverifiedShow Answer

Helper T (TH) cells recognize antigens when they are bound to a(n) __________.

Correct AnswerverifiedShow Answer

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Complement C3b protein coats bacteria and stimulates phagocytosis by during a process called .

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Helper T (T_H) cells recognize antigens when they are bound to a(n) __________.

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