ATI RN
Immune System Multiple Choice Questions Questions
Question 1 of 5
Non-specific defense mechanisms are effective against _________ type(s) of infectious agent(s) and specific defense mechanisms are effective against __________ type(s) of infectious agent(s).
Correct Answer: B
Rationale: Nonspecific defenses target many agents; specific target one.
Question 2 of 5
Interferons are very special defence mechanisms which operate by:
Correct Answer: B
Rationale: Interferons bind neighboring cells, inducing antiviral states.
Question 3 of 5
Mast cells
Correct Answer: A
Rationale: Mast cells are bone marrow-derived; they drive type I , release PAF , and don't phagocytose .
Question 4 of 5
General characteristics of the complement system includes proteins that are:
Correct Answer: A
Rationale: Complement proteins are liver-made and circulate; not antigen-specific , not only spleen , or only post-stimulation .
Question 5 of 5
Clonal deletion and clonal abortion are examples of mechanisms related to:
Correct Answer: B
Rationale: Clonal deletion/abortion occur in thymus (central); peripheral is post-thymus, periportal is not a term.