ATI RN
Lymphatic System Practice Questions Questions
Question 1 of 5
Which lymphoid organ is most involved in blood filtration?
Correct Answer: B
Rationale: The spleen filters blood; thymus matures T cells, nodes filter lymph, tonsils trap pathogens.
Question 2 of 5
What is the primary function of the immune system?
Correct Answer: B
Rationale: The immune system defends against pathogens; nutrient transport is circulatory, hormones are endocrine, temperature is hypothalamus.
Question 3 of 5
The adaptive immune response is initiated in:
Correct Answer: B
Rationale: Lymph nodes initiate adaptive responses; bone marrow produces cells, blood and skin are initial sites.
Question 4 of 5
What is the role of MHC class II molecules?
Correct Answer: B
Rationale: MHC II presents to T-helper cells; MHC I is for cytotoxic, B cells use BCR, cytokines are separate.
Question 5 of 5
The thymus is derived from which embryonic structure?
Correct Answer: A
Rationale: The thymus comes from pharyngeal pouches; neural crest , mesoderm , and ectoderm form other structures.