ATI RN
Immune System Multiple Choice Questions Questions
Question 1 of 5
Concerning palatine tonsils, which of the following is correct?
Correct Answer: D
Rationale: Palatine tonsils have nodules and diffuse tissue ; they're in the oropharynx (not nasopharynx, A), non-keratinized , glands open at crypt surfaces (C is incorrect).
Question 2 of 5
Which of the following is true about antigen presentation through MHC II molecules?
Correct Answer: D
Rationale: MHC II presents exogenous peptides to CD4+ Th cells ; endogenous and killer T cells are MHC I, not on all cells .
Question 3 of 5
What cytokines do Th17 cells produce that recruit neutrophils to the site of infection and influence B cells to produce the right antibodies?
Correct Answer: A
Rationale: Th17 cells produce IL-17 and IL-21 to recruit neutrophils and aid B cells ; other pairs (B, C, D) target different responses.
Question 4 of 5
The walls of lymphatic vessels are similar to those of cardiovascular
Correct Answer: B
Rationale: Lymphatic vessel walls resemble veins with thin walls and valves; arteries are thicker, capillaries lack valves, and distributing arteries are muscular.
Question 5 of 5
In patients with lymphomas, the cancer cells invade the bone marrow and destroy the environment required for normal hematopoiesis. This leads to bone marrow failure, which disrupts the production of hematopoietic cell lineages. All of the following cell types would be affected by this EXCEPT:
Correct Answer: D
Rationale: Bone marrow failure affects hematopoietic cells (A, B, C, E) derived from stem cells; endothelial cells are non-hematopoietic and unaffected.