Gap junctions?

Gap junctions are specialized intercellular connections between adjacent cells that allow for direct communication and exchange of ions, small molecules, and signaling molecules. They are composed of proteins called connexins, which form channels that connect the cytoplasm of neighboring cells. This allows for rapid and coordinated communication between cells, important for processes such as cell signaling, synchronization of cell activities, and coordination of tissue function. Gap junctions are found in many types of cells, including cardiac muscle cells, neurons, and epithelial cells.