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Question
Many people experience allergic symptoms of sneezing or wheezing on exposure to certain substances in the environment. Give two examples of such substances. Which type of antibodies are produced by the body in response to these substances? Mention the role of mast cells in this kind of allergic response.
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Solution
The exaggerated response of the immune system to certain antigens present in the environment is called allergy. The antibodies produced to these are of IgE type. Common examples of allergens are mites in dust, pollens, animal dander, etc. Allergy is due to the release of chemicals like histamine and serotonin from the mast cells.
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RELATED QUESTIONS
Match the items given under column I with those given under column II.
| Column A | Column B | ||
| 1 | Dust allergy | a. | Nuts |
| 2 | food allergy | b. | Pollen |
| 3 | Seasonal allergy | c. | Asthma |
Name any three allergens.
Increased asthmatic attacks in certain seasons are related to:
For a person who has an allergy, the type of antibody produced in his body is ______.
In what state is histamine present in mast cells and basophils?
How many types of histamine receptors are present in the body?
Which histamine receptors are primarily responsible for producing allergic manifestations?
What is the primary function of H2 receptors?
Why do more children in metro cities suffer from allergies and asthma according to the lifestyle effect?
Which of the following statements about IgE antibodies is correct?
