ATI RN
Questions on the Immune System Questions
Question 1 of 5
A patient gets a cold, and recovers a few days later. The patient's classmates come down with the same cold roughly a week later, but the original patient does not get the same cold again. This is an example of:
Correct Answer: A
Rationale: Recovery from infection is natural active; not artificial or passive (C, D).
Question 2 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 3 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 4 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.
Question 5 of 5
Which of the following immunity is obtained during a lifetime?
Correct Answer: A
Rationale: Acquired immunity develops over a lifetime, encompassing active and passive forms.