ATI RN
Questions on the Immune System Questions
Question 1 of 5
The AIDS virus:
Correct Answer: C
Rationale: HIV can be latent; it's not HTLV , targets CD4 , and is RNA .
Question 2 of 5
The spleen is much like a lymph node except that the spleen
Correct Answer: C
Rationale: The spleen filters blood, not lymph, and contains lymphocytes and phagocytes, unlike lymph nodes.
Question 3 of 5
Which of the following antibody mechanisms is correctly described?
Correct Answer: D
Rationale: All mechanisms are correct: chemotaxis attracts phagocytes, opsonization aids phagocytosis, lysis (via complement) ruptures cells.
Question 4 of 5
The only blood cells which are not viewed as a part of the immune system are
Correct Answer: D
Rationale: Red blood cells transport oxygen, not part of immunity.
Question 5 of 5
The lymphatic vessels contain valves that help maintain the one-way flow of lymph. What is the purpose of these valves?
Correct Answer: A
Rationale: Valves ensure lymph flows toward the heart, preventing backflow.