ATI RN
Immune System Multiple Choice Questions and Answers Questions
Question 1 of 5
Proteins known as CD4 and CD8 are
Correct Answer: A
Rationale: CD4 (helper T) and CD8 (cytotoxic T) are surface proteins aiding antigen recognition.
Question 2 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 3 of 5
Hepatitis is an example of ___________.
Correct Answer: D
Rationale: Hepatitis vaccines (e.g., Hep B) are recombinant, using engineered antigens.
Question 4 of 5
Identify examples of nonspecific defenses.
Correct Answer: C
Rationale: Nonspecific defenses include chemical barriers, complement, interferon, and inflammation.
Question 5 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.