ATI RN
Immune System Practice Questions Questions
Question 1 of 5
The thymus is derived from which embryonic structure?
Correct Answer: A
Rationale: The thymus comes from pharyngeal pouches; neural crest , mesoderm , and ectoderm form other structures.
Question 2 of 5
Which cells are key to the secondary immune response?
Correct Answer: A
Rationale: Memory cells drive faster secondary responses; neutrophils , macrophages , and dendritic are initial responders.
Question 3 of 5
Which cytokine promotes fever?
Correct Answer: A
Rationale: IL-1 induces fever; IL-2 boosts T cells, IL-4 aids B cells, IL-10 suppresses.
Question 4 of 5
Which cells undergo negative selection in the thymus?
Correct Answer: B
Rationale: T cells undergo negative selection; B cells are in marrow, macrophages and neutrophils don't.
Question 5 of 5
With regard to the medullary sinuses of the lymph node: They contain blood.
Correct Answer: B
Rationale: Medullary sinuses contain lymph, not blood; blood is found in vascular structures like sinuses of the spleen.