MICROANATOMY

Detailed explanation-1: -Transcellular transport involves the transportation of solutes by a cell through a cell. One classic example is the movement of glucose from the intestinal lumen to extracellular fluid by epithelial cells.

Detailed explanation-2: -The transcellular pathway is a carrier-mediated (and thus, saturable), energy-dependent, active transport mechanism, which carries calcium from the intestinal lumen across the brush border of the luminal membrane, through the cytoplasm, and extrudes the ion into the vascular side of the epithelium.