ATI RN
Immune System Multiple Choice Questions and Answers PDF Questions
Question 1 of 5
In specific immunity, competent T-cells are activated by
Correct Answer: D
Rationale: IL-1 from antigen-presenting cells activates T cells in specific immunity.
Question 2 of 5
The primary function of the lymphatic system in immune defense includes:
Correct Answer: A
Rationale: It supports antibody production via lymphocytes, not oxygen transport.
Question 3 of 5
Which of the following statements is true about the IgM of humans?
Correct Answer: D
Rationale: IgM is mainly in blood, not crossing the placenta or protecting mucosa (IgA role).
Question 4 of 5
Which of the following is NOT a physical barrier that prevents infection?
Correct Answer: C
Rationale: HCl is a chemical barrier, not physical like skin or cilia.
Question 5 of 5
Which of the following is NOT true of T cell activation?
Correct Answer: C
Rationale: T cells do not produce antibodies (B cell role); they produce cytokines.