In the digestive tract, absorption is controlled by mechanisms on the cell's apical membrane surface. What type of physical barriers would be in place to keep these mechanisms from being circumnavigated?
A) desmosomes
B) gap junctions
C) tight junctions
D) carrier proteins
E) microvilli

Question

Quizplus · Accepted Answer

Tight junctions are specialized connections between neighboring cells in the epithelial lining of the digestive tract. They form a barrier that prevents the passage of substances between cells, ensuring that absorption occurs through the cell via its mechanisms rather than bypassing them.

In the Digestive Tract, Absorption Is Controlled by Mechanisms on the Cell's