ATI RN
Pediatric Immunity NCLEX Questions Questions
Question 1 of 5
Which immune system cells recognize body cells with reduced expression of MHC class I molecules?
Correct Answer: D
Rationale: NK cells target cells with low MHC I, a sign of viral infection or malignancy.
Question 2 of 5
In addition to infection and bleeding, the MOST common cause of death in Wiskott-Aldrich syndrome is
Correct Answer: D
Rationale: Wiskott-Aldrich syndrome (WAS) patients have a high risk of EBV-associated lymphomas due to immune dysregulation, making it a leading cause of death.
Question 3 of 5
Chronic neutropenia by definition lasts longer than
Correct Answer: B
Rationale: Chronic neutropenia is defined as lasting >3 months, distinguishing it from transient causes like viral infections.
Question 4 of 5
Shifting to the left (proportion of immature neutrophil cells >5%) may occasionally be caused by all the following EXCEPT
Correct Answer: D
Rationale: Megaloblastic anemia affects RBC production, not neutrophil maturation; the others cause stress-induced left shifts.
Question 5 of 5
The complement component of both the classical and alternative pathways is
Correct Answer: B
Rationale: C3 is central to both classical and alternative pathways, acting as a convergence point for complement activation.