Gap junctions function
Communication between adjacent cells
Five types of cell junctions
Tight junction, adherens junction, desmosomes, hemidesmosomes, and Gap junction.
Tight junction
Seal off passageways between adjacent cells
Adherens junction
Help epithelial surfaces resist separation during various contractile activities as when food moves through the intestines
Desmosomes
Contains plaque and have transmembrane glycoproteins that extend into the intercellular space between adjacent cell membrane and attach cells to one another
Hemidesmosomes
Resemble desmosomes they do not link adjacent cells. Looks like half a desmosomes.