ATI RN
Chapter 20 The Lymphatic System and Immunity Sample Questions Questions
Question 1 of 5
trabecular artery in spleen circulation divide into
Correct Answer: D
Rationale: Trabecular arteries divide into follicular arterioles in white pulp.
Question 2 of 5
Choose the correct statement about splenic trabeculae:
Correct Answer: A
Rationale: Splenic trabeculae are made of connective tissue cells and fibers ; they have elastic fibers and muscle , extend from capsule , and form irregular compartments .
Question 3 of 5
What is the role of NK cells in the innate immune system?
Correct Answer: B
Rationale: NK cells kill virus-infected and cancer cells ; they produce cytokines but aren't phagocytic or pain-related .
Question 4 of 5
What happens when killer T cells recognize foreign MHC molecules in organ transplants?
Correct Answer: A
Rationale: Killer T cells attack foreign MHC in transplants , causing rejection; they don't ignore , produce antibodies , or activate DCs here.
Question 5 of 5
Which cell has the shortest lifespan?
Correct Answer: D
Rationale: Neutrophils have the shortest lifespan (hours, D); plasma B cells (A, B) and DCs live longer.