NaCl which absorbed from ascending limb of Henle's loop is exvhanged with

Options

A. AL of Vasa recta
B. DL of Henle's loop
C. DL of Vasa recta
D. Collecting duct

Answer

To answer the question "NaCl which absorbed from ascending limb of Henle's loop is exchanged with," we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Structure**: The loop of Henle consists of two limbs: the descending limb and the ascending limb. The ascending limb is impermeable to water but actively transports NaCl out of the filtrate into the surrounding interstitial fluid.

2. **Counter Current Mechanism**: The counter current mechanism involves the interaction between the ascending limb of the loop of Henle and the descending limb of the vasa recta. This mechanism helps maintain a concentration gradient in the kidney.

3. **NaCl Absorption**: As NaCl is absorbed from the ascending limb of the loop of Henle, it creates a higher osmolarity in the surrounding interstitial fluid. This osmotic gradient is crucial for the reabsorption of water in other parts of the nephron.

4. **Exchange Process**: The NaCl that is absorbed from the ascending limb of Henle is exchanged with the descending limb of the vasa recta. The vasa recta runs parallel to the loop of Henle and helps maintain the osmotic gradient.

5. **Conclusion**: Therefore, the NaCl absorbed from the ascending limb of Henle's loop is exchanged with the descending limb of the vasa recta.

### Final Answer:
NaCl absorbed from the ascending limb of Henle's loop is exchanged with the descending limb of the vasa recta.

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