Question

Type III hypersensitivity conditions such as arthritis involve _________

1) the activation of mast cells.
2) a cytotoxic reaction.
3) delayed, cell-mediated immune reactions.
4) the formation of immune complexes.
5) All of the choices are correct.

Answer 1

Type III hypersensitivity conditions such as arthritis involve the formation of immune complexes, which can trigger damaging inflammatory responses and cause tissue damage.

Step-by-step explanation:

Type III hypersensitivity conditions such as arthritis involve the formation of immune complexes. Immune complexes, which are made up of antibodies (IgG, IgM, and occasionally IgA) and antigens, can accumulate in tissues and trigger damaging inflammatory responses. This can lead to tissue damage mediated by other components of the immune system.