What effect does an increase in ADH levels have on the DCT?
A)Increased ADH will decrease the number of aquaporins in the DCT which increases water reabsorption and reduces urine volume.
B)Increased ADH will increase the number of aquaporins in the DCT which increases water reabsorption and reduces urine volume.
C)Increased ADH will increase the number of aquaporins in the DCT which decreases water reabsorption and reduces urine volume.
D)Increased ADH will decrease the number of aquaporins in the DCT which decreases water reabsorption and reduces urine volume.
E)Increased ADH will increase the number of aquaporins in the DCT which increases water reabsorption and increases urine volume.

Question

Quizplus · Accepted Answer

Increased levels of ADH (antidiuretic hormone) stimulate the insertion of aquaporins (water channels) into the collecting ducts and the DCT (distal convoluted tubule), thereby increasing the reabsorption of water and reducing the volume of urine. Therefore, Option B is the correct choice as an increase in ADH levels will increase the number of aquaporins in the DCT and increase water reabsorption, leading to a reduction in urine volume.

What Effect Does an Increase in ADH Levels Have on the DCT