Zoology - Structural Organisation in Animals Question with Solution | TestHub

Unique junctions called intercalated discs (communication junctions) link the cells together and define their borders. Intercalated discs are the major portal for cardiac cell-to-cell communication, which is required for coordinated muscle contraction and maintenance of circulation. Communication junctions at some fusion points allow the cells to contract as a unit, i.e., when one cell receives a signal to contract, its neighbours are also stimulated to contract.