the three main portions of the renal tubule are the proximal convoluted tubule, the loop of henle, and the distal convoluted tubule. the proximal convoluted tubule is the first portion. The proximal (convulated) tubule.

The distal convoluted tubule or the collecting tube.

Proximal convoluted tubule, Loop of henle and Distal convoluted tubule.

Proximal convoluted tubules have brush borders or microvilli on the inner edge of the tubule. Distal convoluted tubules do not have this structure.

no