Intercalated disc

Intercalated discs or lines of Eberth are microscopic identifying features of cardiac muscle.

Intercalated discs support synchronized contraction of cardiac tissue in a wave-like pattern so that the heart can work like a pump.

Intercalated discs are complex structures that connect adjacent cardiac muscle cells.

[2] Mutations in the intercalated disc gene are responsible for various cardiomyopathies that can lead to heart failure.

[2] Ruptured intercalated discs, when seen on histopathology, have two main causes: Additional signs indicating forceful myocardial contraction are:[5][6]

Ruptured intercalated discs, in this case regarded as a visual artifact .