Intercalated disc
Microscopic feature of cardiac muscle
Intercalated disc
Intercalated discs or lines of Eberth are microscopic identifying features of cardiac muscle. Cardiac muscle consists of individual heart muscle cells (cardiomyocytes) connected by intercalated discs to work as a single functional syncytium. By contrast, skeletal muscle consists of multinucleated muscle fibers and exhibits no intercalated discs. Intercalated discs support synchronized contraction of cardiac tissue in a wave-like pattern so that the heart can work like a pump. They occur at the Z line of the sarcomere and can be visualized easily when observing a longitudinal section of the tissue.
Read on Wikipedia · Image Dr. S. Girod, Anton Becker, CC BY 2.5
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