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)adjusting the urine pH.

Question

Quizplus · Accepted Answer

The primary function of the proximal convoluted tubule is the absorption of ions, organic molecules, vitamins, and water. The process of filtration occurs in the glomerulus, which is located before the proximal convoluted tubule. Secretion of acids and ammonia occurs in the distal and collecting tubules, while the secretion of drugs can occur in various parts of the nephron. Adjusting the urine pH is also a function that occurs at different parts of the nephron. Therefore, the best choice is B.

The Primary Function of the Proximal Convoluted Tubule Is