Immune System Quizlet
Regulatory T cells
a. release cytokines that increase the activity of cytotoxic T cells and activated B cells
b. decrease their activity as antigenic stimulus decreases
c. may function in preventing autoimmune reactions
d. aid B cells in antibody production - Ans -C
Which of the following statements regarding NK cells is a false or incorrect statement?
a. nk cells are a type of neutrophil
b. nk cells are present in the blood, spleen, lymph nodes, and red bone marrow
c. nk cells attack cells that display abnormal or lack MHC antigens
d. nk cells attack cancer cells and virus infected body cells - Ans -A
Phagocyte mobilization involves
a. diapedesis, during which cells line up against the capillary wall
b. margination, which is the process of white cell movement through the walls of capillaries
into injured tissues
c. mainly neutrophil and macrophage migration into inflamed areas
d. monocytes as the most active phagocyte - Ans -C
The redness and heat of an inflamed area are due to a local hyperemia caused by
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, a. vasodilation
b. vasoconstriction
c. phagocyte mobilization
d. complement production - Ans -A
Vaccines work by
a. boosting innate immunity with cytokines
b. priming the adaptive immunity with a relatively harmless primary exposure
c. providing the necessary antibodies to fight infections
d. suppressing inflation to help speed healing - Ans -B
What is the role of interferon in defense against disease?
a. protects cells that have not yet been infected by viruses
b. protects cells that have not yet been infected by bacteria
c. activates the complement mechanism
d. activates the inflammatory process - Ans -A
Which of the following cells has the largest role and most widespread effect on immunity?
a. B cell
b. helper T cell
c. cytotoxic T cell
d. APC - Ans -B
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Regulatory T cells
a. release cytokines that increase the activity of cytotoxic T cells and activated B cells
b. decrease their activity as antigenic stimulus decreases
c. may function in preventing autoimmune reactions
d. aid B cells in antibody production - Ans -C
Which of the following statements regarding NK cells is a false or incorrect statement?
a. nk cells are a type of neutrophil
b. nk cells are present in the blood, spleen, lymph nodes, and red bone marrow
c. nk cells attack cells that display abnormal or lack MHC antigens
d. nk cells attack cancer cells and virus infected body cells - Ans -A
Phagocyte mobilization involves
a. diapedesis, during which cells line up against the capillary wall
b. margination, which is the process of white cell movement through the walls of capillaries
into injured tissues
c. mainly neutrophil and macrophage migration into inflamed areas
d. monocytes as the most active phagocyte - Ans -C
The redness and heat of an inflamed area are due to a local hyperemia caused by
1
Page
, a. vasodilation
b. vasoconstriction
c. phagocyte mobilization
d. complement production - Ans -A
Vaccines work by
a. boosting innate immunity with cytokines
b. priming the adaptive immunity with a relatively harmless primary exposure
c. providing the necessary antibodies to fight infections
d. suppressing inflation to help speed healing - Ans -B
What is the role of interferon in defense against disease?
a. protects cells that have not yet been infected by viruses
b. protects cells that have not yet been infected by bacteria
c. activates the complement mechanism
d. activates the inflammatory process - Ans -A
Which of the following cells has the largest role and most widespread effect on immunity?
a. B cell
b. helper T cell
c. cytotoxic T cell
d. APC - Ans -B
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