ATI RN
NCLEX Pediatric Immunization Questions Questions
Question 1 of 5
Combat certain parasitic infections (e.g. worms); hydrolytic enzymes
Correct Answer: C
Rationale: Eosinophils target parasites with hydrolytic enzymes.
Question 2 of 5
Regarding the cutaneous immune system (skin), T lymphocytes and Langerhans cells (chiefly ) are found in the and macrophages and T cells are found in the
Correct Answer: D
Rationale: Langerhans cells (DCs) and CD8+ T cells are in the epidermis; macrophages and T cells are in the dermis.
Question 3 of 5
During B cell development, at what stage can cytoplasmic μ chains begin to be found?
Correct Answer: B
Rationale: Cytoplasmic μ chains appear in early pre-B cells after heavy chain rearrangement.
Question 4 of 5
B cells whose BCRs bind antigen with high-affinity receive survival signals (called selection) from follicular dendritic cells (FDCs) and germinal center T cells, whereas those that fail to bind antigen
Correct Answer: B
Rationale: High-affinity B cells undergo positive selection and survive; low-affinity cells die.
Question 5 of 5
Which of the following begins at the DP stage and not the DN stage?
Correct Answer: A
Rationale: α chain rearrangement occurs at the DP stage, while β chain rearrangement happens earlier at the DN stage.