ATI RN
Good Questions About the Immune System Questions
Question 1 of 5
A Th17 immune response is characterized by infiltration of...?
Correct Answer: C
Rationale: Th17 responses recruit neutrophils to fight extracellular pathogens; monocytes and eosinophils are less characteristic.
Question 2 of 5
Which subset of Th cells produces cytokines that encourage the production of mucus in the intestine?
Correct Answer: B
Rationale: Th2 cells promote mucus production via IL-13 ; Th1 and Th17 target other responses, Th0 is uncommitted.
Question 3 of 5
How are B cells tolerized in the bone marrow?
Correct Answer: B
Rationale: B cells edit receptors to avoid self-reactivity ; hypermutation enhances affinity, selection (C, D) is T-cell-specific.
Question 4 of 5
The most numerous and main cell in the inflammatory response is the
Correct Answer: B
Rationale: Neutrophils are the most abundant in acute inflammation; macrophages , monocytes , and basophils are less numerous.
Question 5 of 5
Although the complement cascade can be initiated by antibodies bound to the surface of a pathogen, complement activation is generally considered to be an innate immune response. This is because:
Correct Answer: A
Rationale: Alternative/lectin pathways use innate recognition molecules ; MAC , inflammation , and phagocytosis are outcomes, not the innate basis.