Function of loop of Henle is

Options

A. Conservating of water
B. Formation of urine
C. Filtration of blood
D. Passage of urine

Answer

### Step-by-Step Solution:

1. **Understanding the Loop of Henle**: The Loop of Henle is a U-shaped portion of the nephron, which is the structural and functional unit of the kidney.

2. **Location**: The Loop of Henle is situated between the proximal convoluted tubule and the distal convoluted tubule in the nephron.

3. **Main Function**: The primary function of the Loop of Henle is the conservation of water. It plays a crucial role in concentrating urine and regulating water balance in the body.

4. **Mechanism of Action**: The Loop of Henle facilitates the reabsorption of water and ions. This is particularly important for maintaining the body’s hydration levels.

5. **Role of Hormones**: The Loop of Henle is responsive to the antidiuretic hormone (ADH), also known as vasopressin. This hormone is released when there is a loss of water in the body, enhancing water reabsorption in the Loop of Henle.

6. **Comparison with Other Functions**:
- **Formation of Urine**: This is a function of the entire kidney, not just the Loop of Henle.
- **Filtration of Blood**: This occurs primarily in the glomerulus, not the Loop of Henle.
- **Passage of Urine**: This is the function of the ureters, which transport urine from the kidneys to the bladder.

7. **Conclusion**: Therefore, the correct answer to the question regarding the function of the Loop of Henle is the conservation of water.