The cell-to-cell contacts of the cardiac muscle fibers are called

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The intercalated discs are specialized cell-to-cell contacts found in cardiac muscle fibers that allow for coordinated contraction of the heart. They contain desmosomes, which provide mechanical stability, and gap junctions, which allow for electrical and metabolic coupling between adjacent cells. Z discs and T-tubules are structures found in skeletal muscle, while sarcoplasmic reticulum is an organelle involved in calcium storage and release in both skeletal and cardiac muscle. "Cardiac discs" is not a term used in muscle anatomy.

The Cell-To-Cell Contacts of the Cardiac Muscle Fibers Are Called