ATI RN
Pediatric Immunization Test Questions Questions
Question 1 of 5
Low pH
Correct Answer: C
Rationale: Low pH in the GI tract (e.g., stomach acid) is an innate barrier.
Question 2 of 5
Pus formed at the site of infection is largely composed of dead:
Correct Answer: B
Rationale: Neutrophils are the primary cells in pus due to their rapid response and death post-phagocytosis.
Question 3 of 5
Which of the following alerts the adaptive immune system to the presence of infection?
Correct Answer: D
Rationale: IL-12 bridges innate and adaptive immunity by activating T cells.
Question 4 of 5
Mast cell arachidonic acid metabolites include cyclo-oxygenase, which produces prostaglandins that stimulate and increase of smooth muscle in the gut and bronchi. Metabolites also include leukotrienes, which have a effect than prostaglandins.
Correct Answer: D
Rationale: Prostaglandins cause vasodilation and smooth muscle contraction, while leukotrienes have a faster, more potent effect on inflammation and constriction.
Question 5 of 5
Vaccines (natural exposure) is considered active immunotherapy and leads to the development of immunologic memory.
Correct Answer: A
Rationale: Active immunotherapy via vaccines stimulates the immune system to produce memory cells, conferring long-term immunity.