Discuss Forum
1. Histamin causes:
- A. Vasodilatation
- B. Vasodilatation
- C. Vasodilatation
- D. Vasodilatation
Answer: Option A
Explanation:
Histamine - a chemical found in some of the body's cells - causes many of the symptoms of allergies, such as a runny nose or sneezing.
When a person is allergic to a particular substance, such as a food or dust, the immune system mistakenly believes that this usually harmless substance is actually harmful to the body.
Post your comments here: