The function of a tight junction within epithelial tissue is to
A)assure that material has to pass through rather than between epithelial cells.
B)assure that material is captured by phagocytes before entering a cell.
C)assure that material is channeled between cells rather than into them.
D)prevent the dissolution of a cell's plasma membrane.
E)channel substances away from an epithelium rather than toward it.

Question

Quizplus · Accepted Answer

Tight junctions are specialized structures that hold epithelial cells together very tightly, preventing the free diffusion of materials between the cells. These junctions create a barrier that forces materials to move through, rather than around, the cells. This helps to maintain the integrity of the epithelial layer and prevent potential damage or invasion by pathogens.

The Function of a Tight Junction Within Epithelial Tissue Is