Which cell of blood secrete histamine, serotonin and heparin ?

Options

A. Acidophils
B. Basophil
C. Neutrophil
D. Lymphocyte

Answer

To solve the question "Which cell of blood secretes histamine, serotonin, and heparin?", we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Components**: First, we need to identify the substances mentioned in the question: histamine, serotonin, and heparin. Each of these substances has specific roles in the body.
- **Histamine**: It is involved in allergic responses and acts as a neurotransmitter.
- **Serotonin**: This is a neurotransmitter that helps regulate mood, emotions, and other functions.
- **Heparin**: It is an anticoagulant that prevents blood clotting.

2. **Identify the Cell Types**: The question provides four options: acidophil, basophil, neutrophil, and lymphocyte. We need to determine which of these cells is responsible for secreting the substances mentioned.
- **Acidophil**: Typically associated with eosinophils, which are involved in combating parasitic infections and allergic reactions.
- **Basophil**: A type of white blood cell that plays a role in inflammatory responses and releases histamine and heparin.
- **Neutrophil**: The most abundant type of white blood cell, primarily involved in fighting infections.
- **Lymphocyte**: A type of white blood cell involved in the immune response.

3. **Match the Functions**: Now, we compare the functions of these cells with the substances they secrete:
- **Basophils** are known to secrete histamine (involved in allergic reactions), serotonin (though less commonly associated with basophils, it can be released), and heparin (an anticoagulant).

4. **Conclusion**: Based on the functions and substances, the cell that secretes histamine, serotonin, and heparin is the **basophil**.

### Final Answer:
The cell of blood that secretes histamine, serotonin, and heparin is the **basophil**.

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