Question

In an allergic reaction, which of the following is secreted?

• A. Histamine
• B. Neutrophil
• C. Basophil
• D. Acidophil

Hint:

Remember: \[ \text{Basophils and Mast Cells} \rightarrow \text{Release Histamine} \] Histamine is responsible for most common symptoms of allergy such as sneezing, watery eyes, itching and inflammation.

Answer 1

The Correct Option is A

Step 1: Recall the cause of allergic reactions. Allergic reactions occur when the immune system shows an exaggerated response to allergens such as pollen, dust, animal dander, etc.

Step 2: Identify the chemical mediator involved. During an allergic reaction, mast cells and basophils release: \[ \boxed{\text{Histamine}} \] Histamine causes:
• Sneezing
• Itching
• Inflammation
• Increased mucus secretion

Step 3: Evaluate the options.
• Histamine \(\rightarrow\) Secreted during allergy \(\checkmark\)
• Neutrophil \(\rightarrow\) White blood cell, not secreted \(\times\)
• Basophil \(\rightarrow\) Cell that releases histamine \(\times\)
• Acidophil \(\rightarrow\) Not related to allergic mediator \(\times\) Therefore, \[ \boxed{\text{Histamine}} \] Hence, the correct answer is: \[ \boxed{\text{(A)}} \]