ATI RN
Immune System Multiple Choice Questions and Answers PDF Questions
Question 1 of 5
Examples of primary mediators released by Mast cells would be
Correct Answer: D
Rationale: Heparin is a preformed primary mediator; cytokines , leukotrienes , and PAF are secondary.
Question 2 of 5
Lymphocytes that are CD4+CD25+FoxP3+ with respect to cell surface markers are called:
Correct Answer: D
Rationale: T regulatory cells are CD4+CD25+FoxP3+; not APCs , B cells , cytotoxic , or NK-like .
Question 3 of 5
Which lymphoid tissue is found in the small intestine?
Correct Answer: B
Rationale: Peyer's patches are in the small intestine; tonsils are in the throat, appendix is separate, and spleen is abdominal.
Question 4 of 5
Which organ removes damaged red blood cells from circulation?
Correct Answer: B
Rationale: The spleen removes damaged RBCs; thymus matures T cells, nodes filter lymph, appendix is minor.
Question 5 of 5
Which organ filters blood and stores platelets?
Correct Answer: B
Rationale: The spleen filters blood and stores platelets; thymus matures T cells, nodes filter lymph, tonsils trap pathogens.