To coordinate the contraction of the numerous muscle cells that form the heart,signals must travel rapidly between muscle cells.To allow this rapid communication,muscle cells in the heart are connected by

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Gap junctions are specialized protein channels that allow for the rapid transmission of signals and electrical impulses between adjacent muscle cells. This allows for coordinated contraction and helps to ensure that the heart beats as a single, coordinated unit. Tight junctions and anchoring junctions are important for maintaining the structure and integrity of tissues, but they do not allow for rapid communication between cells in the same way that gap junctions do. Carrier proteins are involved in the movement of substances across membranes but are not directly involved in cell-cell communication.

To Coordinate the Contraction of the Numerous Muscle Cells That