Block3/Fig.7a Cardiac muscle fiber, ls.

block4_14.jpg - Fig.7a Cardiac muscle fiber, ls. In longitudinal section,cardiac muscle fibers are striated and multinucleate, likeskeletal muscle. Cardiac muscle cells branch to form aninterconnecting network and are joined to each other byintercalated discs. The intercalated discs are specializedintercellular junctions separating adjacent cells in cardiacmuscle fibers. They appear as thin, typically dark-staininglines dividing adjacent cardiac muscle cells.Fig.7b Cardiac muscle fiber, cs. Photo taken from 93W4058.In cross section, the nuclei of cardiac muscle fibers arecentrally located, like smooth muscle. Compare thecharacteristics of cardiac muscle with skeletal and smoothmuscle described in block 1.

Fig.7a Cardiac muscle fiber, ls. In longitudinal section, cardiac muscle fibers are striated and multinucleate, like skeletal muscle. Cardiac muscle cells branch to form an interconnecting network and are joined to each other by intercalated discs. The intercalated discs are specialized intercellular junctions separating adjacent cells in cardiac muscle fibers. They appear as thin, typically dark-staining lines dividing adjacent cardiac muscle cells.

Fig.7b Cardiac muscle fiber, cs. Photo taken from 93W4058. In cross section, the nuclei of cardiac muscle fibers are centrally located, like smooth muscle. Compare the characteristics of cardiac muscle with skeletal and smooth muscle described in block 1.

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