Question 1

All of the following pertain to interferon except

Accepted Answer

A)   it inhibits viruses, tumors, and cancer gene expression.
B)   it increases capillary permeability and vasodilation.
C)   it is produced by certain white blood cells and tissue cells.
D)   it includes alpha, beta, and gamma types.
E)   it is a protein.F) A) and B)
G) A) and C)

Question 2

If an individual has a genetic disorder whereby they lack the ability to make complement protein C3,the likely consequence is

Accepted Answer

A)   excessive fever development.
B)   enhanced inflammation.
C)   a higher incidence of bacterial and viral infections.
D)   an inability to synthesize antibodies.E) C) and D)
F) All of the above

Question 3

Which white blood cells comprise 3-7% of circulating WBCs,are phagocytic,and can migrate out into body tissues to differentiate into macrophages?

Accepted Answer

A)   Basophils
B)   Eosinophils
C)   Neutrophils
D)   Monocytes
E)   LymphocytesF) A) and C)
G) B) and D) D

Question 4

What structures are found along lymphatic vessels and are heavily clustered in the armpit,groin,and neck?

Accepted Answer

A)   Spleen
B)   Thymus
C)   GALT
D)   Tonsils
E)   Lymph nodesF) B) and D)
G) D) and E)

Question 5

The normal human microbiota is considered part of the 1st line of defense because

Accepted Answer

A)   microbial antagonism keeps potential pathogens in check.
B)   microbiota cause an inflammatory response, eliminating pathogens.
C)   pathogens and normal biota cannot exist in the same location.
D)   resident bacterial cells stimulate phagocytosis of pathogens.E) A) and B)
F) A) and C)

Question 6

The main function of the mononuclear phagocyte system is to provide

Accepted Answer

A)   surveillance cells.
B)   a connection between tissues and organs.
C)   filtration of extracellular fluid.
D)   filtration of blood.E) A) and B)
F) None of the above

Question 7

Place the following cells in order from greatest to least phagocytic activity: neutrophils,eosinophils,macrophages.

Accepted Answer

A)   Macrophages, eosinophils, neutrophils
B)   Neutrophils, macrophages, eosinophils
C)   Eosinophils, macrophages, neutrophils
D)   Neutrophils, eosinophils, macrophages
E)   Macrophages, neutrophils, eosinophilsF) B) and E)
G) A) and C)

Question 8

Lysozyme is found in ______.

Accepted Answer

A)   tears
B)   salivary secretions
C)   sweat from sweat glands
D)   All of the choices are correct.E) A) and B)
F) B) and C)

Question 9

The alternate complement pathway uses complement proteins C1,C2,and C4.

Accepted Answer

A) True 
 B)False  False

Question 10

A person will typically experience the sensation of _____ when fever is starting to occur in the body.

Accepted Answer

A)   pain
B)   chills
C)   sweating
D)   heatE) A) and C)
F) B) and C)

Question 11

Which of the following is not a chief function of inflammation?

Accepted Answer

A)   Cause a fever
B)   Start tissue repair
C)   Block further invasion
D)   Mobilize and attract immune components to injury site
E)   Destroy microbesF) A) and D)
G) A) and E)

Question 12

Immune system cells differentiate between self and foreign cells by their ______.

Accepted Answer

A)   markers
B)   sizes
C)   cell processes
D)   shapes
E)   cell wallsF) A) and B)
G) A) and E)

Question 13

During inflammation,a high neutrophil count is a common sign of bacterial infection.

Accepted Answer

A) True 
 B)False

Question 14

Which white blood cells comprise 20% to 30% of the circulating WBCs and are the cells that function in the body's specific immune system?

Accepted Answer

A)   Monocytes
B)   Lymphocytes
C)   Neutrophils
D)   Eosinophils
E)   BasophilsF) C) and D)
G) A) and B)

Question 15

The membrane attack stage of the complement cascade involves

Accepted Answer

A)   initiation of the cascade.
B)   the production of inflammatory cytokines.
C)   C1q binding to surface receptors on a membrane.
D)   a ring-shaped protein digesting holes in bacterial cell membranes and virus envelopes.
E)   the cleaving of C3 to yield C3a and C3b.F) B) and D)
G) B) and E)

Question 16

Monocytes and lymphocytes are agranular leukocytes.

Accepted Answer

A) True 
 B)False

Question 17

The leakage of vascular fluid into tissues is called ______.

Accepted Answer

A)   pus
B)   chemotaxis
C)   edema
D)   vasoactivity
E)   diapedesisF) C) and D)
G) B) and E) C

Question 18

After loading wood into a fireplace,you realize you have gotten a splinter in your finger.Within a short period of time,your finger is painful,red,and swollen,and is warm to the touch.This is an example of ______.

Accepted Answer

A)   nonspecific resistance
B)   specific resistance
C)   acquired immunity
D)   adaptive immunityE) B) and D)
F) A) and D)

Question 19

Nonspecific chemical defenses include

Accepted Answer

A)   lysozyme.
B)   lactic acid and electrolytes of sweat.
C)   the skin's acidic pH and fatty acids.
D)   stomach hydrochloric acid.
E)   All of the choices are correct.F) A) and D)
G) B) and E)

Question 20

Which of the following is a chemical used by phagocytes to destroy ingested foreign substances?

Accepted Answer

A)   Hydrogen peroxide
B)   Nitric oxide
C)   Lactic acid
D)   Superoxide anion
E)   All of these are used.F) A) and B)
G) A) and C)

Exam 14: Host Defenses I: Overview and Nonspecific Defenses

All of the following pertain to interferon except

Correct AnswerverifiedShow Answer

If an individual has a genetic disorder whereby they lack the ability to make complement protein C3,the likely consequence is

Correct AnswerverifiedShow Answer

Which white blood cells comprise 3-7% of circulating WBCs,are phagocytic,and can migrate out into body tissues to differentiate into macrophages?

Correct AnswerverifiedD

What structures are found along lymphatic vessels and are heavily clustered in the armpit,groin,and neck?

Correct AnswerverifiedShow Answer

The normal human microbiota is considered part of the 1st line of defense because

Correct AnswerverifiedShow Answer

The main function of the mononuclear phagocyte system is to provide

Correct AnswerverifiedShow Answer

Place the following cells in order from greatest to least phagocytic activity: neutrophils,eosinophils,macrophages.

Correct AnswerverifiedShow Answer

Lysozyme is found in ______.

Correct AnswerverifiedShow Answer

The alternate complement pathway uses complement proteins C1,C2,and C4.

Correct AnswerverifiedFalse

A person will typically experience the sensation of _____ when fever is starting to occur in the body.

Correct AnswerverifiedShow Answer

Which of the following is not a chief function of inflammation?

Correct AnswerverifiedShow Answer

Immune system cells differentiate between self and foreign cells by their ______.

Correct AnswerverifiedShow Answer

During inflammation,a high neutrophil count is a common sign of bacterial infection.

Correct AnswerverifiedShow Answer

Which white blood cells comprise 20% to 30% of the circulating WBCs and are the cells that function in the body's specific immune system?

Correct AnswerverifiedShow Answer

The membrane attack stage of the complement cascade involves

Correct AnswerverifiedShow Answer

Monocytes and lymphocytes are agranular leukocytes.

Correct AnswerverifiedShow Answer

The leakage of vascular fluid into tissues is called ______.

Correct AnswerverifiedC

After loading wood into a fireplace,you realize you have gotten a splinter in your finger.Within a short period of time,your finger is painful,red,and swollen,and is warm to the touch.This is an example of ______.

Correct AnswerverifiedShow Answer

Nonspecific chemical defenses include

Correct AnswerverifiedShow Answer

Which of the following is a chemical used by phagocytes to destroy ingested foreign substances?

Correct AnswerverifiedShow Answer

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False

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C

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