Question 1

What is the cytolytic substance released by NK cells that lyse the cell membranes of infected or cancerous cells?

Accepted Answer

A)   Perforin
B)   Complement proteins
C)   Hydrochloric acid (HCl) 
D)   Interleukin-2E) A) and D)
F) None of the above

Question 2

What is the function of T lymphocytes?

Accepted Answer

A)   Producing antibodies
B)   Cellular immune response
C)   Humoral immune response
D)   Antigen presentationE) None of the above
F) A) and C)

Question 3

What accounts for the swelling that occurs with inflammation?

Accepted Answer

A)   Increased permeability of nearby capillaries
B)   Stimulation of pain receptors
C)   Blockage of lymphatic vessels
D)   Dilation of nearby blood vesselsE) None of the above
F) All of the above

Question 4

The thymus is located in the mediastinum behind the sternum.

Accepted Answer

A) True 
 B)False

Question 5

What factor leads to the formation of lymph?

Accepted Answer

A)   Increased hydrostatic pressure of tissue fluid
B)   Massive immune response to foreign substances
C)   Release of fluids from the spleen into the lymphatic vessels
D)   Filtration of plasma out of blood vessels within lymph nodesE) C) and D)
F) B) and D)

Question 6

What type of cell is targeted by the human immunodeficiency virus (HIV) ?

Accepted Answer

A)   Cytotoxic T cells
B)   Monocytes
C)   B cells
D)   Macrophages and helper T-cellsE) None of the above
F) A) and B)

Question 7

During the primary immune response, B cells give rise to plasma cells.

Accepted Answer

A) True 
 B)False

Question 8

A newborn infant may have some immune defense because of the presence of IgA antibodies in its blood. What is the source of these antibodies?

Accepted Answer

A)   Colostrum and breast milk
B)   Its own immune response to pathogens
C)   The mother's blood via the placentaD) All of the above
E) None of the above

Question 9

During an immune response, some of the cells in a B cell clone will differentiate into __________ cells which, in turn, produce antibodies.

Accepted Answer

The answer of During an immune response, some of the...

Question 10

What classes of antibodies are involved in activation of complement?

Accepted Answer

A)   IgG and IgM
B)   IgG and IgE
C)   IgA and IgD
D)   IgM and IgAE) C) and D)
F) A) and D)

Question 11

In an autoimmune disease, what is targeted by the autoantibodies?

Accepted Answer

A)   Foreign substances
B)   Tissues and organs of the body
C)   Viruses
D)   Bacteria
E)   MacrophagesF) D) and E)
G) All of the above

Question 12

The activation of what type of immune cell requires that an antigen be "presented" to it by an antigen-presenting cell?

Accepted Answer

A)   T cells
B)   B cells
C)   Macrophages
D)   Plasma cellsE) A) and D)
F) A) and C)

Question 13

Name the cells that are primarily responsible for immunity.

Accepted Answer

A)   Lymphocytes and macrophages
B)   Neutrophils and lymphocytes
C)   Monocytes and macrophages
D)   Lymphocytes and monocytesE) A) and C)
F) C) and D)

Question 14

Some lymphocyte precursors become B cells after being processed within the __________. Others become T cells after being processed within the __________.

Accepted Answer

A)   bone marrow; thymus
B)   spleen; bone marrow
C)   lymph nodes; spleen
D)   thymus; bone marrowE) C) and D)
F) None of the above

Question 15

Helper T cells "help" activate other immune cells by releasing substances called __________.

Accepted Answer

The answer of Helper T cells "help" activate other immune...

Question 16

What situation will result in increased formation of lymph?

Accepted Answer

A)   Decreased osmotic pressure in blood capillaries
B)   Decreased osmotic pressure in tissue fluid
C)   Decreased volume of tissue fluid
D)   Decreased protein concentration in tissue fluidE) None of the above
F) All of the above

Question 17

Name the two collecting ducts that drain lymphatic trunks.

Accepted Answer

A)   Thoracic duct and right lymphatic duct
B)   Lumbar duct and left lymphatic duct
C)   Intestinal duct and left intercostal duct
D)   Right and left bronchomediastinal ductsE) A) and B)
F) None of the above

Question 18

What part of a lymph node do blood vessels enter and exit?

Accepted Answer

A)   Lymphatic sinus
B)   Germinal center
C)   Lymphatic nodule
D)   HilumE) All of the above
F) B) and D)

Question 19

During an immune response, what cell types are able to directly bind or interact with an intact antigen?

Accepted Answer

A)   B cells and macrophages
B)   Cytotoxic T cells and helper T cells
C)   Macrophages and helper T cells
D)   B cells and cytotoxic T cellsE) B) and C)
F) A) and D)

Question 20

What are the most active phagocytic cells in circulating blood?

Accepted Answer

A)   Neutrophils and monocytes
B)   Neutrophils and eosinophils
C)   Monocytes and macrophages
D)   Lymphocytes and monocytesE) C) and D)
F) None of the above

Exam 14: Lymphatic System and Immunity

Some lymphocyte precursors become B cells after being processed within the __________. Others become T cells after being processed within the __________.

Correct AnswerverifiedShow Answer

Helper T cells "help" activate other immune cells by releasing substances called __________.

Correct AnswerverifiedShow Answer

A newborn infant may have some immune defense because of the presence of IgA antibodies in its blood. What is the source of these antibodies?

Correct AnswerverifiedShow Answer

What classes of antibodies are involved in activation of complement?

Correct AnswerverifiedShow Answer

What are the most active phagocytic cells in circulating blood?

Correct AnswerverifiedShow Answer

What situation will result in increased formation of lymph?

Correct AnswerverifiedShow Answer

During an immune response, what cell types are able to directly bind or interact with an intact antigen?

Correct AnswerverifiedShow Answer

What part of a lymph node do blood vessels enter and exit?

Correct AnswerverifiedShow Answer

Name the cells that are primarily responsible for immunity.

Correct AnswerverifiedShow Answer

What accounts for the swelling that occurs with inflammation?

Correct AnswerverifiedShow Answer

In an autoimmune disease, what is targeted by the autoantibodies?

Correct AnswerverifiedShow Answer

What is the function of T lymphocytes?

Correct AnswerverifiedShow Answer

Name the two collecting ducts that drain lymphatic trunks.

Correct AnswerverifiedShow Answer

During the primary immune response, B cells give rise to plasma cells.

Correct AnswerverifiedShow Answer

The activation of what type of immune cell requires that an antigen be "presented" to it by an antigen-presenting cell?

Correct AnswerverifiedShow Answer

What is the cytolytic substance released by NK cells that lyse the cell membranes of infected or cancerous cells?

Correct AnswerverifiedShow Answer

What factor leads to the formation of lymph?

Correct AnswerverifiedShow Answer

The thymus is located in the mediastinum behind the sternum.

Correct AnswerverifiedShow Answer

During an immune response, some of the cells in a B cell clone will differentiate into __________ cells which, in turn, produce antibodies.

Correct AnswerverifiedShow Answer

What type of cell is targeted by the human immunodeficiency virus (HIV) ?

Correct AnswerverifiedShow Answer

Some lymphocyte precursors become B cells after being processed within the . Others become T cells after being processed within the .

Correct Answer
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