ATI RN
Questions on the Immune System Questions
Question 1 of 5
What is the primary function of lymphatic valves?
Correct Answer: B
Rationale: Valves prevent lymph backflow; they don't increase pressure , filter , or produce lymph.
Question 2 of 5
Which lymphoid organ regresses with age?
Correct Answer: B
Rationale: The thymus regresses after puberty; spleen , nodes , and tonsils persist.
Question 3 of 5
Which cells produce antibodies?
Correct Answer: B
Rationale: B cells produce antibodies; T cells coordinate, macrophages phagocytose, neutrophils fight infection.
Question 4 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 5 of 5
Which organ stores memory lymphocytes?
Correct Answer: C
Rationale: Lymph nodes store memory cells; thymus matures, spleen filters, marrow produces.