is the proximal convoluted tubule attached to the collecting duct?
The word 'proximal' in 'proximal convoluted tubule' implies it's near or attached to the renal corpuscle, and if you look at the image on your screen, you can also see how convoluted this duct is due to a bunch of twists and turns.s an important side note, the last three segments I talked about-the collecting duct, distal convoluted tubule, and the connecting tubule-are all involved in the water and acid-base balance of the urine. For our purposes, I'll be brief.