ATI RN
Pediatric Immune Disorder Test Questions Questions
Question 1 of 5
Leukemoid reactions (WBC count >50,000/μL) are caused by all the following EXCEPT
Correct Answer: D
Rationale: Chronic granulomatous disease causes defective neutrophil function, not leukemoid reactions, which are triggered by severe infections like shigellosis.
Question 2 of 5
How are B-cell and T-cell antigen receptors distributed?
Correct Answer: C
Rationale: B and T cell receptors are distributed clonally, meaning each lymphocyte expresses a unique receptor specific to an antigen, expanded upon activation.
Question 3 of 5
Which of the following components of the adaptive immune system causes lysis of virally infected cells and the release of cytokines?
Correct Answer: C
Rationale: CD8+ cytotoxic T cells (CTLs) lyse virally infected cells and release cytokines to eliminate intracellular pathogens.
Question 4 of 5
In a resting lymphocyte, B cells and T cells can be distinguished from each other via a simple blood smear.
Correct Answer: B
Rationale: A simple blood smear cannot distinguish B and T cells in resting states, as they require specific markers (e.g., CD19, CD3) for identification.
Question 5 of 5
Which of the following types of antigen presenting cells (APCs) has immunoglobulin that functions as a receptor, then the antigen is internalized, degraded, and presented to T cells?
Correct Answer: C
Rationale: B cells use surface immunoglobulin as a receptor to internalize, process, and present antigens to T cells.