ATI RN
Lymphatic System Quiz Questions Questions
Question 1 of 5
Which of the following distinguishes the secondary immune response from the primary immune response?
Correct Answer: B
Rationale: The secondary response, driven by memory cells, is faster and stronger than the primary, both being specific and involving B/T cells.
Question 2 of 5
Which of the statements below is a consequence of MHC1 antigen presentation?
Correct Answer: A
Rationale: MHC1 presents to CD8+ T cells, activating them against intracellular pathogens, not directly enhancing macrophages.
Question 3 of 5
During positive selection, a weak interaction between an immature T cell receptor and self MHC:
Correct Answer: A
Rationale: Weak TCR-MHC binding during positive selection ensures T cells can recognize self-MHC, surviving to mature.
Question 4 of 5
As a mechanism of attack against extracellular bacteria and fungi, Th17 cells mediate the recruitment and stimulation of which type of innate immune cell?
Correct Answer: D
Rationale: Th17 cells recruit neutrophils via IL-17 to combat extracellular pathogens.
Question 5 of 5
Which hypersensitivity reactions are T cell-mediated?
Correct Answer: D
Rationale: Type IV is T-cell-mediated (delayed); Types I-III (A, B, C) involve antibodies.