Cardiac muscle fibers are electrically connected to neighboring fibers by

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Cardiac muscle fibers are connected to each other by gap junctions, allowing for rapid transmission of electrical signals and coordinated contraction of the heart. Desmosomes and tight junctions provide mechanical support and adhesion between cells, but do not allow for electrical communication. Interneurons are not involved in the electrical coupling of cardiac muscle cells, and chordae tendinae are structures associated with the heart valves.

Cardiac Muscle Fibers Are Electrically Connected to Neighboring Fibers by