ATI RN
Immune System Multiple Choice Questions and Answers Questions
Question 1 of 5
The lymphatic system plays a vital role in maintaining fluid balance by returning excess interstitial fluid to the bloodstream. What is this excess fluid called?
Correct Answer: C
Rationale: Interstitial fluid is the excess fluid absorbed by lymphatics.
Question 2 of 5
Identify examples of nonspecific defenses.
Correct Answer: C
Rationale: Nonspecific defenses include chemical barriers, complement, interferon, and inflammation.
Question 3 of 5
When an antigen-presenting cell (APC) presents an antigen to a T cell, it must
Correct Answer: D
Rationale: APCs present antigens via MHC to T cells.
Question 4 of 5
Which of the following is the most special characteristic of the adaptive immune system?
Correct Answer: C
Rationale: Memory T cells enable rapid, specific recall, a hallmark of adaptive immunity.
Question 5 of 5
Regarding mast cells, which statement is false
Correct Answer: D
Rationale: Basophils are circulating, not tissue-high; morphine , IgE , and C5a are true.