ATI RN
Pediatric Immunity NCLEX Questions Questions
Question 1 of 5
What is the major site for hematopoiesis, where all blood cells are formed?
Correct Answer: B
Rationale: Bone marrow is the primary site of hematopoiesis in adults.
Question 2 of 5
The spleen responds to antigens and the lymph nodes respond to antigens for presentation to
Correct Answer: D
Rationale: Spleen filters blood-borne antigens; lymph nodes process lymph-borne antigens for T cells.
Question 3 of 5
are trafficked via cell adhesion molecules (CAMs), which are a part of the immunoglobulin superfamily.
Correct Answer: C
Rationale: Both naïve and memory T cells use CAMs for trafficking.
Question 4 of 5
Which of the following best describes the role of the pre-B cell receptor (pre BCR)?
Correct Answer: A
Rationale: The pre-BCR signals proliferation and further development of pre-B cells.
Question 5 of 5
Most peripheral B cells belong to a pool of long lived follicular B lymphocytes called ___ cells. The majority of B cells found in the fetus and neonate are ___ cells, which express the surface marker CD5. ___ cells are the most likely to be involved in autoimmunity.
Correct Answer: B
Rationale: Peripheral B cells are predominantly B-2 (follicular B cells), while B-1 cells dominate in the fetus/neonate and express CD5. B-1 cells are implicated in autoimmunity due to their self-reactive nature.