Which one acts are artifical kidney in haemodialysis ?

Options

A. Dialysing liquid
B. Bubble trap
C. Blood pump
D. Dialyser

Answer

### Step-by-Step Solution:

1. **Understanding Hemodialysis**:
- Hemodialysis is a medical procedure used to remove waste products and excess fluid from the blood when the kidneys are not functioning properly. It is commonly used in patients with kidney failure.

2. **Identifying Components of Hemodialysis**:
- In hemodialysis, several components are involved:
- **Dialysing Fluid**: This fluid helps in the exchange of waste products from the blood.
- **Bubble Trap**: This component is used to remove air bubbles from the blood before it returns to the patient.
- **Blood Pump**: This device helps in circulating the blood through the dialysis machine.
- **Dialyser**: This is the key component that acts as the artificial kidney.

3. **Determining the Function of Each Component**:
- **Dialysing Fluid**: While it plays a crucial role in the process, it does not act as an artificial kidney itself.
- **Bubble Trap**: This is not responsible for filtering blood; it merely removes air bubbles.
- **Blood Pump**: This component is essential for moving blood but does not filter it.
- **Dialyser**: This is the component that actually filters the blood, removing waste products and excess fluids, mimicking the function of a natural kidney.

4. **Conclusion**:
- Based on the functions of each component, the dialyser is the one that acts as the artificial kidney in hemodialysis. Therefore, the correct answer is the **Dialyser**.