When ADH binds to receptor sites on distal convoluted tubule cells,
A)filtrate volume increases.
B)filtrate osmolality decreases.
C)potassium is secreted from the cells.
D)the distal convoluted tubule is less permeable to water.
E)the distal convoluted tubule is more permeable to water.

Question

Quizplus · Accepted Answer

When ADH binds to receptor sites on distal convoluted tubule cells, it increases the insertion of aquaporins (water channels) into the plasma membrane of the cells, making the distal convoluted tubule more permeable to water. This leads to increased water reabsorption from the filtrate, resulting in a more concentrated urine.

When ADH Binds to Receptor Sites on Distal Convoluted Tubule