Which statement about ADH is correct?

Which statement about ADH is correct?

• A. Decreases Urine Output and Increases Fluid Intake
• B. Increases Urine Output and Decreases Fluid Intake
• C. Promotes Sweating
• D. Stimulates Glucagon Release

Answer: (A)

Antidiuretic hormone helps regulate body water balance by acting on the kidneys to conserve water. When the blood becomes more concentrated or the volume drops, ADH is released and binds to receptors in the collecting ducts, signaling the insertion of aquaporin-2 channels. This makes the ducts more permeable to water, so more water is reabsorbed back into the bloodstream. The result is less urine, more concentrated urine, and a tendency toward restoring fluid intake through thirst, which is why this statement best fits the hormone’s action. ADH doesn’t promote sweating and doesn’t stimulate glucagon release, so those options don’t describe its role.

Antidiuretic hormone helps regulate body water balance by acting on the kidneys to conserve water. When the blood becomes more concentrated or the volume drops, ADH is released and binds to receptors in the collecting ducts, signaling the insertion of aquaporin-2 channels. This makes the ducts more permeable to water, so more water is reabsorbed back into the bloodstream. The result is less urine, more concentrated urine, and a tendency toward restoring fluid intake through thirst, which is why this statement best fits the hormone’s action. ADH doesn’t promote sweating and doesn’t stimulate glucagon release, so those options don’t describe its role.