ATI RN
Immune System Quiz Questions Questions
Question 1 of 5
The lymphatic system interacts with the circulatory system at:
Correct Answer: B
Rationale: Lymph enters blood at subclavian veins ; not heart , aorta , or capillaries directly.
Question 2 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 3 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 4 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 5 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.