ATI RN
Immune System NCLEX Questions Questions
Question 1 of 5
is present around blood sinusoid
Correct Answer: A
Rationale: Littoral cells line blood sinusoids in the spleen; Kupffer cells are in the liver.
Question 2 of 5
Thymus dependent zone of the spleen is present at:
Correct Answer: A
Rationale: Thymus-dependent zone in spleen is the periarteriolar lymphatic sheath (PALS) around the central arteriole .
Question 3 of 5
What causes hyperinflation?
Correct Answer: A
Rationale: Hyperinflation results from loss of lung elasticity , as in emphysema; fibrosis (B, C) restricts expansion, bronchiectasis causes dilation, not hyperinflation.
Question 4 of 5
Which co-stimulatory molecule is used by APCs to activate T cells?
Correct Answer: A
Rationale: APCs use B7 to bind CD28 on T cells for co-stimulation ; CD4/CD8 (B, C) are T-cell co-receptors, CD40 is for B cells.
Question 5 of 5
Which cells are recruited to the site of infection during DTH?
Correct Answer: B
Rationale: DTH recruits macrophages and neutrophils ; T cells drive it, but B cells and NK cells are less central.