ATI RN
Immune System Multiple Choice Questions Questions
Question 1 of 5
outer part of thymus cortex Contain - - - while inner part contain -.-.
Correct Answer: A
Rationale: Thymus cortex contains lymphoblasts (immature) externally and mature T-lymphocytes internally.
Question 2 of 5
What characterizes Goblet cells most?
Correct Answer: C
Rationale: Goblet cells primarily produce mucus in the respiratory tract; they lack cilia , P450 enzymes , or surfactant (D, alveolar cells).
Question 3 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 4 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 5 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.