Myocardium
Diagnostic features of cardiac muscle fibers are branching fibers, intercalated discs and centrally-located nuclei. Intercalated discs, appearing as thick lines, are specialized junctions between fibers; each is composed of interdigitating plasma membranes (sarcolemmae), myofilaments and cell junctions. 400x
Branching fibers
Diagnostic features of cardiac muscle fibers are branching fibers, intercalated discs and centrally-located nuclei. Intercalated discs, appearing as thick lines, are specialized junctions between fibers; each is composed of interdigitating plasma membranes (sarcolemmae), myofilaments and cell junctions. 400x
Central nuclei
Diagnostic features of cardiac muscle fibers are branching fibers, intercalated discs and centrally-located nuclei. Intercalated discs, appearing as thick lines, are specialized junctions between fibers; each is composed of interdigitating plasma membranes (sarcolemmae), myofilaments and cell junctions. 400x
Intercalated discs
Diagnostic features of cardiac muscle fibers are branching fibers, intercalated discs and centrally-located nuclei. Intercalated discs, appearing as thick lines, are specialized junctions between fibers; each is composed of interdigitating plasma membranes (sarcolemmae), myofilaments and cell junctions. 400x
Striations
Diagnostic features of cardiac muscle fibers are branching fibers, intercalated discs and centrally-located nuclei. Intercalated discs, appearing as thick lines, are specialized junctions between fibers; each is composed of interdigitating plasma membranes (sarcolemmae), myofilaments and cell junctions. 400x
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