ATI RN
Questions on the Immune System Questions
Question 1 of 5
Which lymphoid organ regresses with age?
Correct Answer: B
Rationale: The thymus regresses after puberty; spleen , nodes , and tonsils persist.
Question 2 of 5
Which cytokine stimulates T cell proliferation?
Correct Answer: B
Rationale: IL-2 boosts T cell growth; IL-1 activates, IL-6 aids B cells, TNF-alpha inflames.
Question 3 of 5
Which organ stores memory lymphocytes?
Correct Answer: C
Rationale: Lymph nodes store memory cells; thymus matures, spleen filters, marrow produces.
Question 4 of 5
Which cells are key to type II hypersensitivity?
Correct Answer: B
Rationale: B cells produce antibodies for type II; T cells are type IV, mast cells are type I, neutrophils are innate.
Question 5 of 5
Which organ is key to B cell activation?
Correct Answer: C
Rationale: Lymph nodes activate B cells; thymus matures T cells, spleen filters, marrow produces.