Cardiac Muscle Fibers
Plasma membranes of adjacent cardiac muscle cells are interlocked at the
intercalated discs which contain:
• Desmosomes: Anchor/mechanically hold the cells together
• Gap junctions: Allow passage of ions from cell to cell, effectively
transmitting action potentials across the entire heart
Plasma membranes of adjacent cardiac muscle cells are interlocked at the
intercalated discs which contain:
• Desmosomes: Anchor/mechanically hold the cells together
• Gap junctions: Allow passage of ions from cell to cell, effectively
transmitting action potentials across the entire heart
