Prothrombin required for blood clotting is prodced in

Options

A. stomach
B. liver
C. spleen
D. pancreas

Answer

**Step-by-Step Solution:**

1. **Understanding Prothrombin**: Prothrombin is a protein that plays a crucial role in the blood clotting process. It is also referred to as coagulation factor 2.

2. **Identifying the Source of Production**: The production of prothrombin occurs in the body’s largest gland. This gland is responsible for various metabolic processes, including the synthesis of proteins necessary for blood clotting.

3. **Determining the Gland**: The largest gland in the human body is the liver. It is known for producing several important proteins, including prothrombin.

4. **Linking Prothrombin to Blood Clotting**: Prothrombin acts as a precursor to thrombin, which is the enzyme that converts fibrinogen into fibrin, leading to the formation of a blood clot.

5. **Final Answer**: Therefore, the answer to the question "Prothrombin required for blood clotting is produced in?" is the liver.

**Final Answer**: Prothrombin is produced in the liver.

---