Which is not part of nephron ?

Options

A. PCT
B. DCT
C. Loop of Henle
D. Collecting duct

Answer

To determine which structure is not part of the nephron, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Structure of Nephron**:
- The nephron is the functional unit of the kidney and consists of two main parts: the renal corpuscle and the renal tubule.

2. **Identify the Components of the Renal Corpuscle**:
- The renal corpuscle is made up of:
- **Glomerulus**: A network of capillaries where filtration occurs.
- **Bowman's Capsule**: A cup-like sac that encases the glomerulus.

3. **Identify the Components of the Renal Tubule**:
- The renal tubule includes:
- **Proximal Convoluted Tubule (PCT)**: The first segment of the renal tubule.
- **Loop of Henle**: The U-shaped segment that dips into the medulla.
- **Distal Convoluted Tubule (DCT)**: The segment that follows the Loop of Henle.

4. **Recognize Other Structures Related to the Kidney**:
- The nephron is connected to other structures in the kidney, such as the collecting duct, which is not part of the nephron itself.

5. **Conclusion**:
- Based on the components identified, the **collecting duct** is not considered a part of the nephron. It is a separate structure that receives urine from multiple nephrons.

### Final Answer:
The structure that is not part of the nephron is the **collecting duct**.

---