3
Question
Allergic reaction occur due to release of
Allergic reaction occur due to release of
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Solution
The correct option is B Histamines
- An allergic reaction occurs due to the hypersensitivity of the immune system to a harmless substance known as an allergen.
- Antibodies are produced by the B-lymphocyte cells which destroy the allergens.
- Destruction of allergens by the antibodies causes the release of a chemical substance into the bloodstream called histamine.
- The release of histamine in a large amount causes swelling of body tissues (inflammation), itching, enlargement of blood vessels and causes bronchospasm.
- So, the correct answer is 'Histamines'.
- An allergic reaction occurs due to the hypersensitivity of the immune system to a harmless substance known as an allergen.
- Antibodies are produced by the B-lymphocyte cells which destroy the allergens.
- Destruction of allergens by the antibodies causes the release of a chemical substance into the bloodstream called histamine.
- The release of histamine in a large amount causes swelling of body tissues (inflammation), itching, enlargement of blood vessels and causes bronchospasm.
- So, the correct answer is 'Histamines'.
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