ATI RN
Pediatric Immunization NCLEX Questions Ricci Questions
Question 1 of 5
Immunoreceptor tyrosine-based activation motifs (ITAMs) are essential for signal transduction in cells.
Correct Answer: D
Rationale: ITAMs are critical for signal transduction in both B cells (via BCR) and T cells (via TCR).
Question 2 of 5
Phagocytic and cytotoxic activities; chemotactic factors
Correct Answer: A
Rationale: Monocytes/macrophages are phagocytic and release chemotactic factors.
Question 3 of 5
Medulla
Correct Answer: A
Rationale: The medulla of lymph nodes contains B cells and plasma cells.
Question 4 of 5
Which of the following is the correct order of lymphocyte extravasation?
Correct Answer: D
Rationale: Extravasation order: adhesion, arrested adhesion, activation, transmigration.
Question 5 of 5
At what stage of B cell development are auto-reactive cells removed?
Correct Answer: D
Rationale: Auto-reactive B cells are removed during the immature cell stage via negative selection.