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  4. When a cardiac muscle cell receives a signal to contract, its neighbours are also stimulated to contract. This is due to

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Q. When a cardiac muscle cell receives a signal to contract, its neighbours are also stimulated to contract. This is due to

NTA AbhyasNTA Abhyas 2022

Solution:

Unique junctions called intercalated discs (gap junctions) link the cells together and define their borders. Intercalated discs are the major portals for cardiac cell-to-cell communication, which is required for coordinated muscle contraction and maintenance of circulation.