Which statement is false regarding the function of ADH in regulating urine volume and concentration?
A) Under the influence of ADH, the kidney conserves water and sodium.
B) If blood sodium concentration increases or blood pressure falls, the hypothalamus sends nerve signals to the posterior pituitary telling it to release ADH.
C) ADH targets distal convoluted tubules and collecting ducts in the kidney to make them more permeable so more water is reabsorbed.
D) ADH only has an effect on water reabsorption, not sodium reabsorption.

Question

Quizplus · Accepted Answer

If blood sodium concentration increases or blood pressure falls, the hypothalamus sends nerve signals to the posterior pituitary telling it to release ADH. ADH targets distal convoluted tubules and collecting ducts in the kidney. The effect of ADH on these structures is to make them more permeable so more water is reabsorbed. This decreases water loss to urine, and therefore helps maintain blood volume and blood pressure. It is important to note that ADH only has an effect on water reabsorption, not sodium reabsorption. Under the influence of ADH, the kidney conserves water, but not sodium. Sodium is allowed to exit with urine, reducing the sodium concentration in the blood.

Which Statement Is False Regarding the Function of ADH in Regulating