Which statement is NOT a step in transepithelial transport?
A) movement of the substance through the cytosol of the tubular cell
B) movement of the substance across the glomerular capillary wall
C) movement of the substance across the luminal membrane of the tubular cell
D) movement of the substance through the interstitial fluid

Question

Quizplus · Accepted Answer

The movement of substances across the glomerular capillary wall is not a step in transepithelial transport. This is because the glomerular capillary wall is not a part of the tubular cell or its membrane. Rather, it is the site of filtration of plasma from the blood into the tubular system. Transepithelial transport occurs within the tubular cell and involves movement of substances across the luminal membrane, through the cytosol, and across the basolateral membrane, as well as movement through the interstitial fluid surrounding the tubular system.

Which Statement Is NOT a Step in Transepithelial Transport