Anaphylaxis is the Term for Reactions Caused When Certain Antigens

Question

Anaphylaxis is the term for reactions caused when certain antigens combine with
A)IgE antibodies.
B)macrophages.
C)IgG antibodies.
D)complement.
E)histamine.

Accepted Answer

Anaphylaxis is a type 1 hypersensitivity reaction that occurs when an antigen combines with IgE antibodies, which are bound to mast cells and basophils. This binding triggers the release of histamine and other inflammatory mediators, leading to a range of symptoms such as hives, swelling, and potentially life-threatening respiratory and cardiovascular symptoms. The other options (B-D) are not directly involved in the mechanism of anaphylaxis.