Question

Name the three types of cell junctions found in the epithelium.

Answer 1

Cell junction:

1. In animals, cell junctions (also known as intercellular bridges) are multiprotein complexes that allow interaction or adhesion between nearby cells or between a cell and the extracellular matrix.
2. Adhering junctions, Gap junctions, and Tight junctions are the three major types of cell junctions found in vertebrates.
3. Adhering junctions performing cementing to keep neighbouring cells together.
4. Gap junctions allow direct chemical communication between adjacent cells cytoplasm by diffusion without interacting with the external fluid.
5. Tight junctions regulate the passage of water and solutes by acting as barriers between epithelial layers.