ATI RN
Immune System NCLEX Questions Questions
Question 1 of 5
Which cells release perforins to kill targets?
Correct Answer: B
Rationale: Cytotoxic T cells use perforins; NK cells also do, but B cells make antibodies, macrophages phagocytose.
Question 2 of 5
Which organ is central to adaptive immunity?
Correct Answer: C
Rationale: Lymph nodes activate adaptive responses; spleen filters, thymus matures T cells, marrow produces.
Question 3 of 5
With regard to secondary lymphatic nodules: They are characterised by a 'darkly basophilic central region'.
Correct Answer: A
Rationale: The germinal center stains darkly basophilic due to dense lymphocyte populations with heterochromatic nuclei.
Question 4 of 5
From which organ was this photomicrograph obtained?
Correct Answer: A
Rationale: The presence of white pulp and central artery indicates this is from the spleen.
Question 5 of 5
All characters of lymph Node Capsule except
Correct Answer: D
Rationale: Lymph node capsule has smooth muscle at hilum , adipose tissue , and is pierced by afferent vessels ; it divides into cortex and medulla, but not regularly (D is incorrect).