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What for the ascending limb of Loop of H...

What for the ascending limb of Loop of Henle is permeable

A

Glucose

B

`NH_(3)` and `CO_(2)`

C

`Na^(+)`

D

Water

Text Solution

AI Generated Solution

The correct Answer is:
### Step-by-Step Solution: 1. **Understanding the Structure**: The ascending limb of the Loop of Henle is a part of the nephron in the kidney. It plays a crucial role in the reabsorption of substances from the filtrate back into the blood. 2. **Identifying Permeability**: The ascending limb is characterized by its permeability to certain ions. It is important to note that it does not allow water to pass through, which is a key distinction from the descending limb. 3. **Types of Transport**: In the ascending limb, both passive and active transport mechanisms are involved. The ascending limb is primarily permeable to sodium (Na+) and chloride (Cl-) ions. 4. **Analyzing Options**: - **Option 1**: Glucose - Incorrect, as glucose is not primarily reabsorbed in the ascending limb. - **Option 2**: Ammonia and Carbon Dioxide - Incorrect, as these substances are not specifically reabsorbed in the ascending limb. - **Option 3**: Sodium Ion - Correct, as the ascending limb is permeable to sodium ions. - **Option 4**: Water - Incorrect, as the ascending limb is not permeable to water. 5. **Conclusion**: Based on the analysis, the ascending limb of the Loop of Henle is permeable to sodium ions and chloride ions. Therefore, the correct answer is sodium ions. ### Final Answer: The ascending limb of the Loop of Henle is permeable to sodium ions (Na+). ---
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