thrombokinate is produced in

Options

A. RBC
B. WBC
C. Blood vessels
D. Blood clotting

Answer

**Step-by-Step Solution:**

1. **Understand the Term "Thrombokinase":**
- Thrombokinase, also known as thromboplastin, is a complex enzyme that plays a crucial role in the blood clotting process.

2. **Identify the Function of Thrombokinase:**
- This enzyme is involved in converting prothrombin into thrombin, which is essential for the formation of fibrin threads that create a blood clot.

3. **Determine Where Thrombokinase is Produced:**
- Thrombokinase is produced in response to blood clotting. It is released from platelets and damaged tissues at the site of injury when blood loss occurs.

4. **Evaluate the Options Given:**
- Option A: RBC (Red Blood Cells) - Incorrect, as thrombokinase is not produced in RBCs.
- Option B: WBC (White Blood Cells) - Incorrect, as thrombokinase is not produced in WBCs.
- Option C: Blood Vessels - Incorrect, as thrombokinase is not produced in blood vessels; it is present in the blood.
- Option D: Blood Clotting - Correct, as thrombokinase is produced during the blood clotting process.

5. **Select the Correct Answer:**
- Based on the evaluation, the correct answer is **Option D: Blood Clotting**.

---