ATI RN
Good Questions About the Immune System Questions
Question 1 of 5
Choose the correct statement about Billroth cords:
Correct Answer: B
Rationale: Billroth cords in spleen red pulp are infiltrated with blood and lymphoid cells ; they're not in lymph nodes or between follicles , and lack central arterioles .
Question 2 of 5
Which of the following is true about MHC II molecules?
Correct Answer: C
Rationale: MHC II binds longer peptides due to open ends ; HLA-D regions encode them , they're stable , and only on APCs .
Question 3 of 5
Which subset of Th cells produces cytokines that encourage the production of mucus in the intestine?
Correct Answer: B
Rationale: Th2 cells promote mucus production via IL-13 ; Th1 and Th17 target other responses, Th0 is uncommitted.
Question 4 of 5
How are B cells tolerized in the bone marrow?
Correct Answer: B
Rationale: B cells edit receptors to avoid self-reactivity ; hypermutation enhances affinity, selection (C, D) is T-cell-specific.
Question 5 of 5
The most numerous and main cell in the inflammatory response is the
Correct Answer: B
Rationale: Neutrophils are the most abundant in acute inflammation; macrophages , monocytes , and basophils are less numerous.