1.In the descending limb, the volume decreases and in the ascending limb, the concentration increases.
2. In the ascending limb, the volume decreases and in the descending limb, the concentration increases
3. In the descending limb, the volume decreases and in the ascending limb, the concentration decreases.
4. In the ascending limb, the volume decreases and in the descending limb, the concentration decreases.