Read following statements with respect to ADH and choose correct one .

Options

A. It helps in the reabsorption of water in neck of Bowman 's capsule
B. It helps in the reabsoption of `Na^(+)` from DCT
C. It helps in reabsorption of water from PCT and DCT
D. It helps in reabsorption of water from DCT and CT .

Answer

To solve the question regarding the Antidiuretic Hormone (ADH) and its functions, we will analyze the provided statements one by one to determine which one is correct.

### Step-by-Step Solution:

1. **Understanding ADH**:
- The full form of ADH is Antidiuretic Hormone. It plays a crucial role in regulating water balance in the body by acting primarily on the kidneys.

2. **Analyzing the Statements**:
- **Statement 1**: "It helps in reabsorption of water in the neck of Bowman's Capsule."
- This statement is incorrect. The neck of Bowman's Capsule is primarily involved in filtration, not reabsorption.

- **Statement 2**: "It helps in the reabsorption of sodium from DCT."
- This statement is partially correct. While ADH does influence sodium reabsorption, it primarily focuses on water reabsorption rather than sodium alone.

- **Statement 3**: "It helps in reabsorption of water from PCT and DCT."
- This statement is misleading. While ADH does promote water reabsorption, it is more effective in the collecting ducts rather than the proximal convoluted tubule (PCT) or distal convoluted tubule (DCT).

- **Statement 4**: "It helps in reabsorption of water from DCT and CT."
- This statement is correct. ADH primarily acts on the distal convoluted tubule (DCT) and the collecting tubule (CT) to promote water reabsorption, thus helping to concentrate urine and increase blood pressure.

3. **Conclusion**:
- After evaluating all the statements, the correct option is the fourth statement: "It helps in reabsorption of water from DCT and CT."

### Final Answer:
The correct statement regarding ADH is: **"It helps in reabsorption of water from DCT and CT."**

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