What is the primary function of lymph node sinuses?

Correct Answer: B

Rationale: Sinuses filter lymph; production is capillaries, storage is cortex, RBCs are spleen.

Correct Answer: B

Rationale: Autoimmunity is self-tolerance failure; allergy and hypersensitivity are overreactions, immunodeficiency is weakness.

Correct Answer: B

Rationale: White pulp produces antibodies; filtering and RBC removal are red pulp, platelets are stored.

Correct Answer: B

Rationale: Memory B cells enable rapid secondary responses; killing is T cells, phagocytosis is macrophages, presentation is dendritic.

Correct Answer: A

Rationale: White pulp is encapsulated within the spleen by a reticular framework, though the spleen itself has a capsule.