If Henle's loop were absent from mammalian nephron which of the following is to be expected

Options

A. The urine will be more dilute
B. There will be no urine formation
C. The urine will have more concentration
D. There will be hardly any change in the quality and quantity of urine formed

Answer

To solve the question regarding the absence of Henle's loop from the mammalian nephron and its expected effects, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Function of Henle's Loop**:
- Henle's loop plays a crucial role in the concentration of urine. It is responsible for the reabsorption of water, sodium, and chloride ions from the filtrate back into the bloodstream.

2. **Impact of Absence of Henle's Loop**:
- Without Henle's loop, the nephron would lose its ability to concentrate urine effectively. This means that the reabsorption of water and ions would be significantly reduced.

3. **Expected Change in Urine Concentration**:
- Since the reabsorption of water and solutes would be impaired, the urine produced would not undergo the concentration process. Therefore, the urine would be more dilute compared to normal conditions.

4. **Evaluate the Options**:
- Given the options:
- The urine will be more dilute (correct).
- There will be no urine formation (incorrect, as urine formation would still occur).
- The urine will have more concentration (incorrect, as concentration would be reduced).
- There will hardly be any change in the quality and quantity of urine formed (incorrect, as there would be a significant change).

5. **Conclusion**:
- The correct answer is that if Henle's loop were absent from the mammalian nephron, the urine will be more dilute.

### Final Answer:
- The urine will be more dilute.