Cell Junctions and Their Functions

These flashcards focus on the different types of cell junctions, their structures, functions, and the importance in various tissues.

Cell Junctions

Structures that secure cells together and enable communication between them.

Tight Junctions

Impermeable junctions that encircle cells, preventing fluids and most molecules from moving between them.

Desmosomes

Anchoring junctions that bind adjacent cells together like molecular 'Velcro' and provide internal stability.

Gap Junctions

Communicating junctions formed by transmembrane proteins that allow small molecules and ions to pass between cells.

Keratin

A protein that forms intermediate filaments within cells, providing structural stability.

Connexons

Pore-forming transmembrane proteins that create channels in gap junctions for intercellular communication.

Intercellular Communication

The process by which cells communicate and exchange signals or materials through junctions.

Muscle Cells of the Heart

Cells that typically have gap junctions and desmosomes to allow for coordinated contraction and stability.