ATI RN
ATI RN Test Bank
Immune System NCLEX Questions Questions
Question 1 of 5
What is the primary function of the thymus gland in the lymphatic system?
Correct Answer: B
Rationale: The thymus produces and matures T lymphocytes.
Question 2 of 5
Interferons are
Correct Answer: A
Rationale: Interferons are cytokines that inhibit viral replication.
Question 3 of 5
Which of the following is NOT a chemical barrier that prevents infection?
Correct Answer: B
Rationale: Mucous membranes are physical, not chemical barriers.
Question 4 of 5
Identify the function of perforins.
Correct Answer: C
Rationale: Perforins from cytotoxic T cells drill holes in target membranes.
Question 5 of 5
Cytotoxic T cells can be activated via which of the following?
Correct Answer: C
Rationale: Cytotoxic T cells (CD8+) are activated by viral peptides on MHC-I.