Question 1

In the classical pathway of complement activation,

Accepted Answer

A)  complement is activated within liver cells and released into the blood.
B)  complement binds to an antibody that is bound to a foreign substance.
C)  complement binds with polysaccharides on a microbial cell wall.
D)  complement inhibits inflammation and binds to opsonins.E) All of the above
F) C) and D)

Question 2

The second signal during B-lymphocyte activation involves stimulation from

Accepted Answer

A)  IL-2 released by cytotoxic T-lymphocytes.
B)  IL-4 released by helper T-lymphocytes.
C)  bradykinin released by antigen-presenting cells.
D)  antibodies released by antigens.E) B) and C)
F) A) and D)

Question 3

Eosinophils and lymphocytes are both types of leukocytes.

Accepted Answer

A) True 
 B)False

Question 4

Cytotoxic T-lymphocytes destroy infected cells by

Accepted Answer

A)  increasing the permeability of infected cells and inducing apoptosis.
B)  increasing the permeability of infected cells and preventing apoptosis.
C)  decreasing the permeability of infected cells and inducing apoptosis.
D)  decreasing the permeability of infected cells and preventing apoptosis.E) A) and B)
F) A) and C)

Question 5

Which is not one of the cardinal signs of inflammation

Accepted Answer

A)  Heat
B)  Redness
C)  Loss of function
D)  Numbness
E)  SwellingF) None of the above
G) A) and B)

Question 6

Dendritic cells serve as antigen-presenting cells.

Accepted Answer

A) True 
 B)False

Question 7

Small fragments of infectious proteins that cause disease in nervous tissue are known as ________.

Accepted Answer

The answer of Small fragments of infectious proteins that cause...

Question 8

High fevers can lead to protein denaturation and raise the likelihood of seizures.

Accepted Answer

A) True 
 B)False

Question 9

One function of helper T-lymphocytes is to enhance the activity of cells of the innate immune system.

Accepted Answer

A) True 
 B)False

Question 10

When compared to a primary response,the antibody levels in a secondary response

Accepted Answer

A)  rise more rapidly and with a greater proportion of IgG antibodies.
B)  rise more rapidly and with a smaller proportion of IgG antibodies.
C)  rise more gradually and with a greater proportion of IgG antibodies.
D)  rise more gradually and with a smaller proportion of IgG antibodies.E) A) and D)
F) A) and C)

Question 11

Over their life span,plasma cells produce hundreds of millions of antibodies against one specific antigen.

Accepted Answer

A) True 
 B)False

Question 12

Cytokines have a _____ half-life and exert influence on ________________.

Accepted Answer

A)  long;immune cells only.
B)  long;immune and non-immune cells.
C)  short;immune cells only.
D)  short;immune and non-immune cells.E) A) and D)
F) None of the above

Question 13

Exudate is

Accepted Answer

A)  blood that escapes capillaries,passes beyond the skin and leaves the body.
B)  increased perfusion of capillary beds within the region of an injury.
C)  lymph that flows away from the heart and toward the site of an injury.
D)  fluid that leaves capillaries to "wash" the interstitial space of an injured tissue.
E)  clotting proteins that wall off microbes and prevent them from spreading through the bloodstream.F) None of the above
G) A) and B)

Question 14

The immunity that occurs as a result of a vaccination is _________ immunity.

Accepted Answer

A)  active
B)  passiveC) A) and B)
D) undefined

Question 15

Cytotoxic T-lymphocytes destroy infected cells by releasing

Accepted Answer

A)  antibodies.
B)  bradykinin and histamine.
C)  perforin and granzymes.
D)  CD4+.E) B) and C)
F) A) and D)

Question 16

In addition to creating a physical barrier to pathogen entry,mucus contains antimicrobial substances such as IgA.

Accepted Answer

A) True 
 B)False

Question 17

Vaccines are effective because they

Accepted Answer

A)  immediately stimulate cellular immunity to eliminate all of the pathogen in the body.
B)  inhibit antibodies from having secondary responses.
C)  stimulate the development of immunologic memory.
D)  increase the number of natural killer cells while decreasing the numbers of T and B cells.E) A) and B)
F) All of the above

Question 18

Inflammation is a(n)

Accepted Answer

A)  antigen-specific process that occurs in avascular tissue.
B)  antigen-specific process that occurs in vascularized tissue.
C)  nonspecific process that occurs in avascular tissue.
D)  nonspecific process that occurs in vascularized tissue.E) B) and C)
F) A) and D)

Question 19

In passive immunity,the individual has not had an antigenic challenge.

Accepted Answer

A) True 
 B)False

Question 20

A delayed response to a specific antigen is provided by

Accepted Answer

A)  adaptive immunity.
B)  innate immunity.
C)  inflammation.D) A) and B)
E) A) and C)

Exam 22: Immune System and the Bodys Defense

Exudate is

Correct AnswerverifiedShow Answer

Which is not one of the cardinal signs of inflammation

Correct AnswerverifiedShow Answer

Eosinophils and lymphocytes are both types of leukocytes.

Correct AnswerverifiedShow Answer

When compared to a primary response,the antibody levels in a secondary response

Correct AnswerverifiedShow Answer

High fevers can lead to protein denaturation and raise the likelihood of seizures.

Correct AnswerverifiedShow Answer

The immunity that occurs as a result of a vaccination is _________ immunity.

Correct AnswerverifiedShow Answer

Inflammation is a(n)

Correct AnswerverifiedShow Answer

Cytotoxic T-lymphocytes destroy infected cells by releasing

Correct AnswerverifiedShow Answer

One function of helper T-lymphocytes is to enhance the activity of cells of the innate immune system.

Correct AnswerverifiedShow Answer

Over their life span,plasma cells produce hundreds of millions of antibodies against one specific antigen.

Correct AnswerverifiedShow Answer

In the classical pathway of complement activation,

Correct AnswerverifiedShow Answer

Vaccines are effective because they

Correct AnswerverifiedShow Answer

In passive immunity,the individual has not had an antigenic challenge.

Correct AnswerverifiedShow Answer

Cytokines have a _____ half-life and exert influence on ________________.

Correct AnswerverifiedShow Answer

The second signal during B-lymphocyte activation involves stimulation from

Correct AnswerverifiedShow Answer

In addition to creating a physical barrier to pathogen entry,mucus contains antimicrobial substances such as IgA.

Correct AnswerverifiedShow Answer

Small fragments of infectious proteins that cause disease in nervous tissue are known as ________.

Correct AnswerverifiedShow Answer

A delayed response to a specific antigen is provided by

Correct AnswerverifiedShow Answer

Dendritic cells serve as antigen-presenting cells.

Correct AnswerverifiedShow Answer

Cytotoxic T-lymphocytes destroy infected cells by

Correct AnswerverifiedShow Answer

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Cytokines have a _ half-life and exert influence on ____________.

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