ATI RN
Immune System Multiple Choice Questions and Answers Questions
Question 1 of 5
Echinoderms have immune systems similar to bony fish in that they possess T and B lymphocytes
Correct Answer: B
Rationale: Echinoderms lack adaptive immunity (T/B cells); bony fish have it.
Question 2 of 5
The functions of the lymphatic system do not include
Correct Answer: C
Rationale: The lymphatic system returns fluid and proteins and transports lipids, but not hormones to intestinal muscle.
Question 3 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 4 of 5
Lymphatic vessels are similar to which other type of vessels in the body?
Correct Answer: B
Rationale: Lymphatic vessels resemble veins with valves and thin walls.
Question 5 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.