If antidiuretic hormone (ADH) levels fall, what happens to urine?

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Multiple Choice

If antidiuretic hormone (ADH) levels fall, what happens to urine?

Explanation:
When ADH is low, the collecting ducts in the kidney become less permeable to water because fewer aquaporin channels are inserted into their membranes. Water therefore cannot be reabsorbed efficiently from the filtrate, so more water stays in the urine. The result is urine that is more dilute and in greater volume. This is the opposite of what happens when ADH is high, which concentrates urine and reduces volume.

When ADH is low, the collecting ducts in the kidney become less permeable to water because fewer aquaporin channels are inserted into their membranes. Water therefore cannot be reabsorbed efficiently from the filtrate, so more water stays in the urine. The result is urine that is more dilute and in greater volume. This is the opposite of what happens when ADH is high, which concentrates urine and reduces volume.

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