ATI RN
Questions on the Immune System Questions
Question 1 of 5
which of the following is not a function of the spleen?
Correct Answer: D
Rationale: Spleen destroys RBCs , stores blood/platelets , forms fetal blood ; lymph filtration is a lymph node function .
Question 2 of 5
What is the function of MHC I molecules?
Correct Answer: C
Rationale: MHC I presents endogenous (intracellular) peptides to CD8+ killer T cells ; exogenous peptides and Th cells are MHC II roles.
Question 3 of 5
What are the two pieces of information required for a Th cell to make a decision about which cytokines to produce?
Correct Answer: A
Rationale: Th cells decide cytokines based on invader type and location ; virulence , duration , and damage are less specific.
Question 4 of 5
What is the function of Th17 cells in the intestinal immune defense?
Correct Answer: C
Rationale: Th17 cells recruit neutrophils and boost mucus via IL-17 ; IL-10/TGF-β is Treg, IFN-γ/IgG is Th1, TJ/IgA is partial."To suppress the activation of potentially self-reactive T cells
Question 5 of 5
Which of these is not a non-specific defense mechanism?
Correct Answer: C
Rationale: Antibodies are specific defenses; bacteria aren't defenses, stomach pH and sebaceous glands are nonspecific.