Please select the correct sequence of events that occur during an immune-complex hypersensitivity reaction.
1) When antigen is in slight excess, immune complexes form.
2) Immune-complexes activate complement, resulting in increased vascular permeability.
3) Neutrophils are attracted, and release enzymes that cause tissue damage.
4) Circulating immune complexes are trapped in the blood vessels, initiating inflammation.
A) 1, 2, 3, 4
B) 1, 2, 4, 3
C) 4, 3, 1, 2
D) 1, 3, 2, 4
E) 4, 3, 2, 1

Question

Please select the correct sequence of events that occur during an immune-complex hypersensitivity reaction.
1) When antigen is in slight excess, immune complexes form.
2) Immune-complexes activate complement, resulting in increased vascular permeability.
3) Neutrophils are attracted, and release enzymes that cause tissue damage.
4) Circulating immune complexes are trapped in the blood vessels, initiating inflammation.
A) 1, 2, 3, 4
B) 1, 2, 4, 3
C) 4, 3, 1, 2
D) 1, 3, 2, 4
E) 4, 3, 2, 1

Quizplus · Accepted Answer

The sequence of events during an immune-complex hypersensitivity reaction is as follows: When antigen is in slight excess, immune complexes form. These immune complexes activate complement, resulting in increased vascular permeability. Circulating immune complexes are trapped in the blood vessels, initiating inflammation. Neutrophils are attracted, and they release enzymes that cause tissue damage. Option B shows the correct order of events.

Please Select the Correct Sequence of Events That Occur During