Question 1

__________ are phagocytes that circulate in the blood.

Accepted Answer

A) B cells 
B) macrophages 
C) Plasma cells 
D) T cells 
E) Monocytes 
A) B cells 
B) macrophages 
C) Plasma cells 
D) T cells 
E) Monocytes

Question 2

A lymphocyte that has never encountered an antigen is called a

Accepted Answer

A) T cell. 
B) B cell. 
C) foreign lymphocyte. 
D) stem leukocyte. 
E) naïve lymphocytE. 
A) T cell. 
B) B cell. 
C) foreign lymphocyte. 
D) stem leukocyte. 
E) naïve lymphocytE.

Question 3

Select the incorrect statement regarding the inflammatory response.

Accepted Answer

A) The inflammation response is a localized specific response to infection or injury. 
B) If a cell is injured or infected,it releases chemical alarm signals that promote dilation of blood vessels at the injury site. 
C) The alarm signals can be histamines or prostaglandins. 
D) Tissue can exhibit edema from the dilation of the blood vessels in the area of injury or infection. 
E) Neutrophils spill chemical in the area of injury or infection that kills bacteria,tissues,and themselves. 
A) The inflammation response is a localized specific response to infection or injury. 
B) If a cell is injured or infected,it releases chemical alarm signals that promote dilation of blood vessels at the injury site. 
C) The alarm signals can be histamines or prostaglandins. 
D) Tissue can exhibit edema from the dilation of the blood vessels in the area of injury or infection. 
E) Neutrophils spill chemical in the area of injury or infection that kills bacteria,tissues,and themselves.

Question 4

Select the incorrect statement regarding the complement system in vertebrates.

Accepted Answer

A) The complement system is a part of the cellular defenses in the immune system of vertebrates. 
B) The complement system consists of approximately 20 different proteins that circulate in the plasma. 
C) If these proteins encounter the cell wall of a bacteria or fungi they form aggregations and eventually produce a pore that leads to the destruction of the invading cells. 
D) Although these proteins attack invaders,they are not involved with histamine release. 
E) The binding of antibodies to invading cells can also trigger aggregations. 
A) The complement system is a part of the cellular defenses in the immune system of vertebrates. 
B) The complement system consists of approximately 20 different proteins that circulate in the plasma. 
C) If these proteins encounter the cell wall of a bacteria or fungi they form aggregations and eventually produce a pore that leads to the destruction of the invading cells. 
D) Although these proteins attack invaders,they are not involved with histamine release. 
E) The binding of antibodies to invading cells can also trigger aggregations.

Question 5

_________ are molecules released by activated helper T cells.

Accepted Answer

A) Antigens 
B) Immunoglobulins 
C) Cytokines 
D) Antibodies 
A) Antigens 
B) Immunoglobulins 
C) Cytokines 
D) Antibodies

Question 6

Which of the following does not cause the release cytokines?

Accepted Answer

A) activated TH cells 
B) macrophages activated by phagocytosis 
C) macrophages activated by binding of certain bacteria 
D) CD4 protein of TH cell binding to conserved regions of MHC 
E) interleukin-12 binding to TH cells 
A) activated TH cells 
B) macrophages activated by phagocytosis 
C) macrophages activated by binding of certain bacteria 
D) CD4 protein of TH cell binding to conserved regions of MHC 
E) interleukin-12 binding to TH cells

Question 7

Antigen shifting allows the pathogens to escape from immune recognition.This mechanism is employed by all of the following except

Accepted Answer

A) flu viruses. 
B) trypanosomes. 
C) malarial protozoans. 
D) HIV. 
E) Antigenic shifting occurs in all of the answers given in this question. 
A) flu viruses. 
B) trypanosomes. 
C) malarial protozoans. 
D) HIV. 
E) Antigenic shifting occurs in all of the answers given in this question.

Question 8

Which of the following would not occur at the site of an intense blunt trauma?

Accepted Answer

A) edema 
B) release of histamine 
C) pain 
D) uptake of prostaglandins 
E) migration of neutrophils 
A) edema 
B) release of histamine 
C) pain 
D) uptake of prostaglandins 
E) migration of neutrophils

Question 9

The ability to digest foreign invading cells is not present in

Accepted Answer

A) macrophages. 
B) neutrophils. 
C) natural killer cells. 
D) T cells. 
E) monocytes. 
A) macrophages. 
B) neutrophils. 
C) natural killer cells. 
D) T cells. 
E) monocytes.

Question 10

Cytotoxic cells must interact for their function with

Accepted Answer

A) MHC-I proteins. 
B) MHC-II proteins. 
C) foreign antigen. 
D) MHC-I proteins and MHC-II proteins. 
E) MHC-II proteins and foreign antigen. 
A) MHC-I proteins. 
B) MHC-II proteins. 
C) foreign antigen. 
D) MHC-I proteins and MHC-II proteins. 
E) MHC-II proteins and foreign antigen.

Question 11

Which of the following is not an organ of the immune system?

Accepted Answer

A) thymus 
B) tonsils 
C) thyroid 
D) spleen 
E) red bone marrow 
A) thymus 
B) tonsils 
C) thyroid 
D) spleen 
E) red bone marrow

Exam 52: The Immune System

__________ are phagocytes that circulate in the blood.

A lymphocyte that has never encountered an antigen is called a

Select the incorrect statement regarding the inflammatory response.

Select the incorrect statement regarding the complement system in vertebrates.

_________ are molecules released by activated helper T cells.

Which of the following does not cause the release cytokines?

Antigen shifting allows the pathogens to escape from immune recognition.This mechanism is employed by all of the following except

Which of the following would not occur at the site of an intense blunt trauma?

The ability to digest foreign invading cells is not present in

Cytotoxic cells must interact for their function with

Which of the following is not an organ of the immune system?

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