The primary function of the proximal convoluted tubule is
A) filtration.
B) absorption of ions, organic molecules, vitamins, and water.
C) secretion of acids and ammonia.
D) secretion of drugs.
E) adjustment of urine volume.

Question

Quizplus · Accepted Answer

The proximal convoluted tubule is responsible for the reabsorption of ions, organic molecules, vitamins, and water from the filtrate. It does not actively secrete acids and ammonia or drugs, and while it can play a role in adjusting urine volume, that is not its primary function.

The Primary Function of the Proximal Convoluted Tubule Is