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The three types of cell junctions that we need to consider are: 1. Tight junctions 2. Desmosomes 3. Gap junctions

Among the three types of cell junctions, gap junctions are the ones that permit communication between cells.

Gap junctions are small channels that connect the cytoplasm of adjacent cells, allowing molecules, ions, and electrical signals to pass directly from one cell to another. This direct communication is essential for coordinating the activities of different cells, such as synchronizing the contraction of muscle cells for proper functioning or sharing metabolic and electrical information between cells to maintain tissue homeostasis. In conclusion, gap junctions are the type of cell junctions that allow communication between cells by providing direct connections for the exchange of molecules, ions and electrical signals. This communication is crucial for coordinating cellular activities and maintaining the overall function of tissues and organs.