ATI RN
Immune System Quiz Questions Questions
Question 1 of 5
The spleen's arterial supply is from which vessel?
Correct Answer: D
Rationale: The splenic artery supplies the spleen; celiac trunk branches to it, renal and hepatic are separate.
Question 2 of 5
Which immunoglobulin crosses the placenta?
Correct Answer: D
Rationale: IgG crosses the placenta; IgA is in secretions, IgD is on B cells, IgE is for allergies.
Question 3 of 5
Which organ filters blood for immune surveillance?
Correct Answer: B
Rationale: The spleen filters blood; thymus matures T cells, nodes filter lymph, tonsils trap pathogens.
Question 4 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 5 of 5
Which immunoglobulin is first produced in neonates?
Correct Answer: C
Rationale: IgE is minimal at birth; IgM is first, but among these, IgG from mother is present, corrected to IgM in context.