ATI RN
Lymphatic System Questions and Answers PDF Questions
Question 1 of 5
Natural killer cells
Correct Answer: B
Rationale: Natural killer (NK) cells release chemicals (e.g., perforin) to induce apoptosis in virus-infected cells, not phagocytosis or antibody tagging.
Question 2 of 5
The second vaccination is beneficial because
Correct Answer: B
Rationale: A second vaccination boosts memory cells, increasing antibody levels faster and stronger, not involving plasma cell survival or circulation.
Question 3 of 5
Complete this sentence. Upon secondary exposure to a pathogen, the adaptive immune response.
Correct Answer: D
Rationale: Secondary responses are rapid (short lag) due to memory cells, stronger than primary, and don't generate new memory cells.
Question 4 of 5
The primary developmental organ of T cells is the:
Correct Answer: A
Rationale: T cells mature in the thymus, unlike B cells (bone marrow); the thyroid is unrelated.
Question 5 of 5
T helper cells:
Correct Answer: B
Rationale: Th cells (CD4+) regulate T and B cell responses and activate innate cells, not inducing cytotoxicity (CD8+ role).