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How much do you know about Hypersensitivity Reactions?

15 Questions

0 Views

How much do you know about Hypersensitivity Reactions?

Created by

@EnrapturedKindness

Questions and Answers

What is the primary target of hypersensitivity reactions?

None of the above

Foreign antigens

Self-antigens

Both self-antigens and foreign antigens (correct)

What is the mechanism of Type I hypersensitivity reaction?

IgE antibodies on mast cells and basophils (correct)

IgM antibodies against cellular antigens

IgG antibodies against soluble antigens

Sensitized T cells

Which type of hypersensitivity reaction involves sensitized T cells?

Type II

Type I

Type IV (correct)

Type III

What is the difference between type II and type III hypersensitivity reactions?

Type II involves IgM or IgG antibodies against cellular antigens, while type III involves IgM or IgG antibodies against soluble antigens. Signup and view all the answers

Which type of hypersensitivity reaction involves sensitized T cells?

Type IV Signup and view all the answers

Which type of hypersensitivity reaction involves sensitized T cells?

Type IV Signup and view all the answers

Which type of hypersensitivity reaction involves IgE antibodies on mast cells and basophils?

Type I Signup and view all the answers

Which type of hypersensitivity reaction is directed against self-antigens?

Type III Signup and view all the answers

Which type of hypersensitivity reaction involves sensitized T cells?

Type IV Signup and view all the answers

Which type of hypersensitivity reaction involves IgE antibodies on mast cells and basophils?

Type I Signup and view all the answers

Which type of hypersensitivity reaction involves IgM or IgG antibodies against cellular antigens?

Type II Signup and view all the answers

Which type of hypersensitivity reaction involves IgM or IgG antibodies against cellular antigens?

Type II Signup and view all the answers

Which type of hypersensitivity reaction involves IgM or IgG antibodies against cellular antigens?

Type II Signup and view all the answers

What is the main difference between Type II and Type III hypersensitivity reactions?

Type II involves IgM or IgG antibodies against cellular antigens, while Type III involves IgM or IgG antibodies against soluble antigens. Signup and view all the answers

What happens upon first exposure to an antigen in a hypersensitivity reaction?

Lymphocytes become sensitized to the antigen. Signup and view all the answers

Study Notes

Hypersensitivity reactions involve excessive immune responses that can cause cell damage and harmful lesions.
These reactions can be directed against self-antigens or foreign antigens.
Lymphocytes become sensitized to the antigen upon first exposure.
Subsequent exposures elicit damaging reactions that are specific to the antigen.
Hypersensitivity reactions can be classified into four types (I, II, III, and IV).
Types I, II, and III are antibody-mediated, while type IV is cell-mediated.
Type I involves IgE antibodies on mast cells and basophils.
Type II involves IgM or IgG antibodies against cellular antigens.
Type III involves IgM or IgG antibodies against soluble antigens.
Type IV involves sensitized T cells.

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Description

Test your knowledge of hypersensitivity reactions with this quiz! Learn about the different types of hypersensitivity reactions, including antibody-mediated and cell-mediated responses. Understand the role of lymphocytes and antibodies in these reactions, as well as the specific antigens that trigger them. Use your expertise to classify each reaction correctly as type I, II, III, or IV. Challenge yourself and see how well you know hypersensitivity reactions!