ATI RN
Questions on the Immune System Questions
Question 1 of 5
What drives lymph movement in the absence of a pump?
Correct Answer: B
Rationale: Respiratory movements aid lymph flow; blood pressure and arterial pulsation drive blood, venous flow is separate.
Question 2 of 5
The thoracic duct drains into the venous system at the junction of:
Correct Answer: A
Rationale: The thoracic duct drains at the subclavian-jugular junction ; others (B, C, D) are incorrect.
Question 3 of 5
Which lymphoid organ regresses with age?
Correct Answer: B
Rationale: The thymus regresses after puberty; spleen , nodes , and tonsils persist.
Question 4 of 5
Which cells produce antibodies?
Correct Answer: B
Rationale: B cells produce antibodies; T cells coordinate, macrophages phagocytose, neutrophils fight infection.
Question 5 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.