ATI RN
Immune System Multiple Choice Questions and Answers Questions
Question 1 of 5
All secondary lymphatic ergons except
Correct Answer: C
Rationale: Thymus is a primary lymphatic organ; lymph nodes, tonsils, and spleen are secondary.
Question 2 of 5
small, round shape with acidophilic mass, surrounded by reticular cell
Correct Answer: B
Rationale: Hassall's corpuscles are small, round, acidophilic masses in the thymus medulla surrounded by reticular cells.
Question 3 of 5
Concerning the thymus, which of the following is correct?
Correct Answer: D
Rationale: Thymus cortex stains darker than medulla ; reticular cells are endodermal , barrier is in cortex , no afferent vessels or plasma cells .
Question 4 of 5
Which condition is characterized by having hyaline membranes?
Correct Answer: B
Rationale: Respiratory distress syndrome features hyaline membranes due to surfactant deficiency; infections (A, D) and atelectasis don't typically show this.
Question 5 of 5
What is the role of HLA-DM protein in MHC II antigen presentation?
Correct Answer: A
Rationale: HLA-DM edits peptides for MHC II by releasing CLIP ; transport roles (B, D) and invariant chain guidance are distinct.