How Do Different Types of Cell Junctions Contribute to Attachment?
Cell junctions are specialized structures that contribute to cellular attachment:
Tight Junctions: These junctions create a barrier that regulates the passage of molecules between cells, contributing to tissue integrity. Adherens Junctions: These junctions connect the actin cytoskeletons of adjacent cells, providing mechanical stability and facilitating communication. Desmosomes: Desmosomes anchor intermediate filaments, offering strong adhesion, especially in tissues subjected to mechanical stress, like the skin and heart. Gap Junctions: These junctions allow direct communication between cells through connexin channels, enabling the transfer of ions and small molecules. Hemidesmosomes: These structures anchor epithelial cells to the basal lamina, a component of the ECM, ensuring tissue stability.
