CardMusc — KinFAST

Adaptive test — questions are selected based on your ability estimate. — Tag: GapJunctionSync

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Which statement correctly describes how cardiac muscle cells communicate electrically?

Gap junctions in intercalated discs allow ions to flow between cells, enabling the atria and ventricles to each contract as a functional syncytium. Desmosomes within intercalated discs act as ion channels, allowing direct electrical current flow between adjacent cells. Cardiac muscle cells have peripherally located nuclei and are connected by tight junctions that prevent ion movement between cells. Cardiac muscle cells use chemical synapses to transmit action potentials from cell to cell via neurotransmitter release.

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