ATI RN
Immune System Quiz Questions Questions
Question 1 of 5
Which cells undergo positive selection in the thymus?
Correct Answer: B
Rationale: T cells undergo positive selection; B cells are in marrow, macrophages and neutrophils don't.
Question 2 of 5
With regard to the medullary sinuses of the lymph node: They are supplied by the paratrabecular sinuses.
Correct Answer: A
Rationale: Lymph flows from paratrabecular (trabecular) sinuses into medullary sinuses in the lymph node.
Question 3 of 5
Identify the structure indicated by an arrow. Classify the tissue composing the structure.
Correct Answer: A
Rationale: The arrow indicates a trabeculum, made of dense irregular connective tissue, providing structural support.
Question 4 of 5
have peripheral dark small lymph with germinal center that have high B-lymph. low T-lymph.
Correct Answer: B
Rationale: Secondary follicles have germinal centers with high B-lymphocytes and low T-lymphocytes, staining dark peripherally.
Question 5 of 5
when spleen Contract, circulation is closed, while when spleen relax. Circulation open
Correct Answer: B
Rationale: Open-closed theory describes spleen circulation: closed when contracted, open when relaxed.