If a patient's renal tubules fail to actively transport sodium ions out of the filtrate, which consequence follows?

💡 Explanation

When sodium reabsorption decreases in the renal tubules due to transport failure, the osmotic gradient drawing water out of the filtrate also weakens, because water reabsorption is dependent on sodium gradients. Therefore, less water is reabsorbed, rather than increased urea, potassium, or glucose reabsorption.

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