1.  Lymphatic vessels transport lymph fluid from the  _______ to the _______. D
liver/bloodstream
Incorrect.
bladder/kidneys
Incorrect.
interstitial spaces/small intestine
Incorrect.
interstitial spaces/bloodstream    
Correct!
liver/small intestine
Incorrect.

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2.  Which of the following vessels connect the lymphatic system to the bloodstream? E
the left lymphatic duct and the abdominal duct 
Incorrect.
the left lymphatic duct and the splenic duct
Incorrect.
the right lymphatic duct and the splenic duct
Incorrect.
the right lymphatic duct and the abdominal duct  
Incorrect.
the right lymphatic duct and the thoracic duct   
Correct!

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3.  Which of the following lymph organs detects and responds to foreign substances in the blood, destroys worn-out erythrocytes, and acts as a blood reservoir? D
thymus
Incorrect.
tonsils
Incorrect.
lymph nodes
Incorrect.
spleen 
Correct!
none of the above
Incorrect.

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4.  Which of the following are the types of tonsils found in the oral cavity and the nasopharynx? C
palatine and pharyngeal
Incorrect.
palatine, pharyngeal, and nasal
Incorrect.
palatine, pharyngeal, and lingual 
Correct!
nasal and palatine
Incorrect.
none of the above 
Incorrect.
   
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5.  Lymph nodes contain large numbers of  ______that help fight invading microorganisms. D
pathogens
Incorrect.
pathogens and plasma
Incorrect.
erythrocytes and leukocytes
Incorrect.
lymphocytes and macrophages  
Correct!
none of the above
Incorrect.

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6.  Identify this lymph organ. D
tonsil
Incorrect.
thymus 
Incorrect.
spleen  
Incorrect.
lymph node
Correct!



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QUIZ_6

7.  Which of the following cells are specialized to nonspecifically consume and digest antigens? D
cytotoxic T lymphocytes
Incorrect.
mast cells
Incorrect.
T helper cells
Incorrect.
macrophages 
Correct!
plasma cells
Incorrect.

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8.  What are the functions of pyrogens? A
They signal the brain to increase body temperature.  
Correct!
They cause macrophages to become activated.
Incorrect.
They produce antibodies by activating B cells.
Incorrect.
They consume pathogens by means of endocytosis.
Incorrect.
They cause mast cells to secrete interleukins.
Incorrect.

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9.  Which of the following describes "complement"? C
It is the interaction between helper T cells and any other component of the immune system. 
Incorrect.
It is the "fit" between antigens and antibodies—a very specific interaction involving proteins. 
Incorrect.
It is a set of about 20 proteins that work together in the nonspecific immune system. 
Correct!
It is a body's ability to fight off a disease very quickly the second time the immune system encounters it.  
Incorrect.
none of the above
Incorrect.

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10.  Which of the following best describes the function of interferon? A
It is a chemical secreted by a cell that has been infected by a virus that causes other cells to initiate antiviral defense mechanisms.    
Correct!
It is a chemical secreted by a cell that has been infected by a bacteria that causes other cells to initiate antibacterial defense mechanisms.
Incorrect.
It is a chemical secreted by macrophages that sticks to microorganisms and makes them easy to recognize by other cells of the immune system.
Incorrect.
It is a chemical secreted by helper T cells to activate plasma cells.
Incorrect.
It is a chemical that will signal the brain to increase body temperature.
Incorrect.

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11.  Which of the following will produce and secrete antibodies? E
T cells
Incorrect.
macrophages
Incorrect.
mast cells
Incorrect.
helper T cells
Incorrect.
plasma cells 
Correct!

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12.  Antibodies are what type of biochemical? D
lipid
Incorrect.
nucleic acid
Incorrect.
carbohydrate
Incorrect.
protein   
Correct!
They are a mixture of many different types of biochemicals.
Incorrect.

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13.  One antibody molecule will "stick to" or bind to how many different antigen molecules? A
1 
Correct!
2
Incorrect.
5 to 10
Incorrect.
hundreds
Incorrect.
millions 
Incorrect.

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14.  Which of the following is not a type of T cell? D
helper T cell
Incorrect.
memory T cell
Incorrect.
suppressor T cell
Incorrect.
plasma T cell 
Correct!
All of the above are types of T cells. 
Incorrect.

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15.  Which type of T cell is responsible for killing infected or cancerous body cells? D
helper T cell
Incorrect.
memory T cell
Incorrect.
suppressor T cell
Incorrect.
cytotoxic  T cell 
Correct!
none of the above 
Incorrect.

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16.  Which of the following substances secreted by a killer T cell causes the membrane of an infected cell to rupture? C
interferon
Incorrect.
complement
Incorrect.
perforin 
Correct!
antibodies
Incorrect.
antigen
Incorrect.

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17.  Receiving a vaccination produces which of the following types of immunity? B
natural and active
Incorrect.
artificial and active   
Correct!
natural and passive
Incorrect.
artificial and passive
Incorrect.


 
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