ATI RN
Immune System Quiz Questions Questions
Question 1 of 5
What is the primary role of the spleen's venous sinuses?
Correct Answer: B
Rationale: Venous sinuses store blood; filtering is nodes, pathogens are macrophages, lymphocytes are white pulp.
Question 2 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 3 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 4 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.
Question 5 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.