Question 1

Interferons do not protect the cell that secretes them.

Accepted Answer

A) True 
 B)False

Question 2

Histamine,serotonin,and bradykinin are all

Accepted Answer

A)   mediators that increase chemotaxis.
B)   mediators of T-cell activity.
C)   fever inducers.
D)   mediators of B-cell activity.
E)   vasoactive mediators.F) A) and B)
G) A) and C)

Question 3

When monocytes migrate from the blood out to the tissues,they are transformed by inflammatory mediators to develop into ______.

Accepted Answer

A)   macrophages
B)   primary phagocytes
C)   neutrophils
D)   killer T cells
E)   cytotoxic T cellsF) B) and D)
G) C) and E)

Question 4

A properly functioning immune system is responsible for

Accepted Answer

A)   surveillance of the body.
B)   recognition of foreign material.
C)   destruction of foreign material.
D)   All of the choices are correct.E) A) and C)
F) B) and C)

Question 5

Which of the following is incorrect about inflammation?

Accepted Answer

A)   Serotonin causes smooth muscle contraction.
B)   Inflammation can last hours to years.
C)   Basophils and mast cells release histamine.
D)   Fever could be beneficial to inhibiting the pathogen.
E)   Pyrogens cause vasodilation and increased capillary permeability.F) B) and D)
G) A) and C)

Question 6

Which body region is protected by fatty acids,acidic pH,lactic acid,and a tough cell barrier with its own normal biota?

Accepted Answer

A)   Eyes
B)   Skin
C)   Urinary tract
D)   Digestive tract
E)   Respiratory tractF) D) and E)
G) A) and C)

Question 7

Neutrophils,eosinophils,and basophils are called _____ because they have prominent cytoplasmic inclusions that appear with identifying,characteristic colors in a stained blood smear.

Accepted Answer

A)   agranulocytes
B)   granulocytes
C)   monocytes
D)   leukocytesE) B) and D)
F) A) and C)

Question 8

During what process are hypochlorite and hydrogen peroxide produced in order to destroy bacteria and inhibit viral replication?

Accepted Answer

A)   Complement production
B)   Inflammation
C)   Interferon production
D)   Lysozyme production
E)   PhagocytosisF) A) and B)
G) A) and C)

Question 9

Genetic markers that distinguish a self cell from a foreign invader are typically ______.

Accepted Answer

A)   DNA or RNA
B)   lipids or lipoproteins
C)   proteins or glycoproteins
D)   polysaccharidesE) A) and D)
F) A) and C)

Question 10

Which of the following is incorrect about complement?

Accepted Answer

A)   It acts in a cascade reaction.
B)   It is composed of at least 20 blood proteins.
C)   It involves a classical pathway.
D)   It only appears in the blood during a response to a pathogen.
E)   It involves an alternate pathway.F) A) and D)
G) D) and E)

Question 11

Plasma cells

Accepted Answer

A)   are derived from T lymphocytes.
B)   function in cell-mediated immunity.
C)   function in blood clotting.
D)   produce and secrete antibodies.E) A) and D)
F) B) and C)

Question 12

Genetic differences among species and within a species can convey genetic immunity to certain diseases.

Accepted Answer

A) True 
 B)False

Question 13

The term _____ is given to any foreign substance that stimulates a specific immune system response.

Accepted Answer

A)   antibody
B)   allergen
C)   antigen
D)   foreign bodyE) A) and B)
F) None of the above

Question 14

Plasma

Accepted Answer

A)   is the liquid portion of blood in which blood cells are suspended.
B)   is mostly water.
C)   contains albumin and globulins.
D)   contains fibrinogen.
E)   All of the choices are correct.F) A) and B)
G) A) and E)

Question 15

Which of the following lymphoid organs or tissues has the immunological function of filtering pathogens from the blood?

Accepted Answer

A)   Tonsils
B)   Thymus
C)   Lymph nodes
D)   Spleen
E)   GALTF) A) and E)
G) A) and C)

Question 16

Components of the first line of defense include all of the following,except

Accepted Answer

A)   the tough cell sheet of the upper epidermis of the skin.
B)   the flushing action of tears and blinking.
C)   nasal hairs.
D)   phagocytic white blood cells.
E)   the flushing action of urine.F) A) and B)
G) A) and C)

Question 17

One of the major differences between the first and second line of defense is that

Accepted Answer

A)   the first line defenses involve complement proteins whereas the second line defenses involve antibodies.
B)   the first line defenses involve the respiratory tract whereas the second line defenses involve the gastrointestinal tract.
C)   the first line defenses are mechanisms whereas the second line defenses are physical barriers to infection.
D)   the first line defenses are anatomical barriers whereas the second line defenses are mechanisms.E) B) and C)
F) A) and B)

Question 18

The production of interferon will protect the host cell from a viral infection.

Accepted Answer

A) True 
 B)False

Question 19

Endotoxin is an exogenous pyrogen.

Accepted Answer

A) True 
 B)False

Question 20

The most numerous WBCs that have multilobed nuclei and are very phagocytic are ______.

Accepted Answer

A)   neutrophils
B)   lymphocytes
C)   monocytes
D)   basophils
E)   eosinophilsF) C) and D)
G) A) and B)

Exam 14: Host Defenses I: Overview and Nonspecific Defenses

The most numerous WBCs that have multilobed nuclei and are very phagocytic are ______.

Correct AnswerverifiedShow Answer

Neutrophils,eosinophils,and basophils are called _____ because they have prominent cytoplasmic inclusions that appear with identifying,characteristic colors in a stained blood smear.

Correct AnswerverifiedShow Answer

When monocytes migrate from the blood out to the tissues,they are transformed by inflammatory mediators to develop into ______.

Correct AnswerverifiedShow Answer

Plasma

Correct AnswerverifiedShow Answer

Interferons do not protect the cell that secretes them.

Correct AnswerverifiedShow Answer

A properly functioning immune system is responsible for

Correct AnswerverifiedShow Answer

Components of the first line of defense include all of the following,except

Correct AnswerverifiedShow Answer

Histamine,serotonin,and bradykinin are all

Correct AnswerverifiedShow Answer

Genetic differences among species and within a species can convey genetic immunity to certain diseases.

Correct AnswerverifiedShow Answer

Endotoxin is an exogenous pyrogen.

Correct AnswerverifiedShow Answer

Which of the following is incorrect about complement?

Correct AnswerverifiedShow Answer

Which body region is protected by fatty acids,acidic pH,lactic acid,and a tough cell barrier with its own normal biota?

Correct AnswerverifiedShow Answer

The term _____ is given to any foreign substance that stimulates a specific immune system response.

Correct AnswerverifiedShow Answer

The production of interferon will protect the host cell from a viral infection.

Correct AnswerverifiedShow Answer

Plasma cells

Correct AnswerverifiedShow Answer

One of the major differences between the first and second line of defense is that

Correct AnswerverifiedShow Answer

Genetic markers that distinguish a self cell from a foreign invader are typically ______.

Correct AnswerverifiedShow Answer

Which of the following lymphoid organs or tissues has the immunological function of filtering pathogens from the blood?

Correct AnswerverifiedShow Answer

During what process are hypochlorite and hydrogen peroxide produced in order to destroy bacteria and inhibit viral replication?

Correct AnswerverifiedShow Answer

Which of the following is incorrect about inflammation?

Correct AnswerverifiedShow Answer

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