which one of the following plasma proteine is involved in the coagulation of blood

Options

A. Globulin
B. Fibrinogen
C. Albumin
D. Serum amylase

Answer

To answer the question, "Which one of the following plasma proteins is involved in the coagulation of blood?" we can follow these steps:

### Step-by-Step Solution:

1. **Understand Blood Composition**: Blood is composed of two main components: formed elements (which include red blood cells, white blood cells, and platelets) and plasma, which is the fluid matrix.

2. **Identify Plasma Composition**: Plasma is primarily made up of water (90-92%) and proteins (6-8%). The main proteins in plasma include fibrinogen, globulins, and albumin.

3. **Functions of Plasma Proteins**:
- **Fibrinogen**: This protein plays a crucial role in blood coagulation. When there is a wound or cut, fibrinogen is converted into fibrin, which helps form a blood clot to prevent blood loss.
- **Globulins**: These proteins are mainly involved in the immune response and defense mechanisms of the body.
- **Albumin**: This protein helps maintain osmotic balance in the body, ensuring proper fluid distribution.

4. **Determine the Correct Answer**: Since the question specifically asks for the plasma protein involved in coagulation, we identify that fibrinogen is the protein responsible for this function.

5. **Conclusion**: Therefore, the correct answer to the question is **fibrinogen**.

### Final Answer:
The plasma protein involved in the coagulation of blood is **fibrinogen**.

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