After the process of dialysis, the cleared blood is pumped back to the body through a vein by adding this

Options

A. anti-heparin
B. heparin
C. dialyzing fluid
D. nitrogenous wastes

Answer

To solve the question regarding what is added to the cleared blood during dialysis before it is pumped back into the body, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Process of Dialysis**:
- Dialysis is a medical procedure used to remove waste products and excess fluid from the blood when the kidneys are not functioning properly. This is often necessary for patients with kidney failure.

2. **Identify the Components Involved**:
- During dialysis, blood is drawn from the patient and passed through a dialyzing unit (artificial kidney) where impurities, particularly nitrogenous wastes, are removed.

3. **Recognize the Purpose of Adding a Substance**:
- After the blood is cleared of waste, it needs to be returned to the patient's body. However, blood can clot when it is outside the body, which can lead to complications.

4. **Determine What is Added to Prevent Clotting**:
- To prevent clotting of the blood during the process of dialysis, a substance known as anti-heparin is added. Heparin is an anticoagulant that helps to keep the blood flowing smoothly.

5. **Select the Correct Answer**:
- Based on the above understanding, the correct answer to the question is **Option A: anti heparin**.

### Final Answer:
After the process of dialysis, the cleared blood is pumped back to the body through a vein by adding **anti heparin**.

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