ATI RN
Immune System Questions Questions
Question 1 of 5
Which of the following is NOT a lymphoid organ?
Correct Answer: C
Rationale: The pancreas is digestive/endocrine, not lymphoid; spleen , thymus , and lymph nodes are lymphoid.
Question 2 of 5
Which lymphatic structure is found in the mediastinum?
Correct Answer: B
Rationale: The thymus is in the mediastinum; spleen is abdominal, tonsils are throat, appendix is gut.
Question 3 of 5
What is the consequence of lymphatic vessel blockage?
Correct Answer: B
Rationale: Lymphedema results from blockage; pressure is circulatory, lymphoma is cancer, lymphadenitis is inflammation.
Question 4 of 5
Which cells in lymph nodes engulf debris?
Correct Answer: B
Rationale: Macrophages engulf debris; lymphocytes , T , and B cells respond to antigens.
Question 5 of 5
Which protein complex enhances phagocytosis in innate immunity?
Correct Answer: B
Rationale: Complement opsonizes pathogens for phagocytosis; antibodies are adaptive, cytokines signal, histamines inflame.