ATI RN
Pediatric Immunization NCLEX Questions Ricci Questions
Question 1 of 5
All the following conditions can induce lymphopenia EXCEPT
Correct Answer: D
Rationale: Cartilage-hair hypoplasia causes T-cell deficiency but not necessarily lymphopenia; the others suppress lymphocyte counts via infection or stress.
Question 2 of 5
Which of the following is NOT a major feature (characteristic) of the adaptive immune system?
Correct Answer: D
Rationale: Speed is a feature of innate immunity, not adaptive, which is characterized by specificity, diversity, and memory.
Question 3 of 5
Which of the following is a transmembrane glycoprotein that serves as a co-receptor for the T cell receptor (TCR), and is also known as a cytotoxic T cell (CTL)?
Correct Answer: B
Rationale: CD8+ is a co-receptor on cytotoxic T cells (CTLs), aiding TCR recognition of MHC class I-antigen complexes.
Question 4 of 5
Which of the following is NOT true regarding the complement system?
Correct Answer: C
Rationale: The complement system attracts phagocytes to foreign material, not self cells, making option c incorrect.
Question 5 of 5
What is the function of major histocompatibility complex (MHC) molecules?
Correct Answer: B
Rationale: MHC molecules present peptide antigens to T cells, enabling adaptive immune recognition.