The distal and collecting tubules are the site of
A) the cotransport carriers for glucose and amino acid reabsorption
B) the organic ion secretory systems
C) aldosterone and vasopressin action
D) the cotransport carriers for glucose and amino acid reabsorption, and aldosterone and vasopressin action
E) the organic ion secretory systems and aldosterone and vasopressin action

Question

Quizplus · Accepted Answer

The distal and collecting tubules are important sites for the action of hormones such as aldosterone and vasopressin, which regulate the reabsorption of water and electrolytes. While the tubules also have transporters for glucose and amino acids, these are more active in the proximal tubules. The organic ion secretory systems are primarily located in the proximal tubules as well. Therefore, C is the best choice as it specifically relates to the main function of the distal and collecting tubules.

The Distal and Collecting Tubules Are the Site of