CARDIAC MUSCLE – 2
The upper figure shows cardiac muscle fibers in longitudinal section, while the lower figure shows fibers in cross-section.
Main histological features of cardiac muscle fibers:
– Fibers arranged in bundles.
– Centrally located nuclei– they are highlighted in green after clicking or using the mouse. The position of the nuclei can be better recognized in cross-sections of the fibers.
– Intercalated discs. In longitudinal sections, intercalated discs appear as darkly stained transverse lines crossing the muscle fibers. They may be difficult to distinguish in some hematoxylin and eosin (H&E)-stained sections.
Main histological features of cardiac muscle fibers:
– Fibers arranged in bundles.
– Centrally located nuclei– they are highlighted in green after clicking or using the mouse. The position of the nuclei can be better recognized in cross-sections of the fibers.
– Intercalated discs. In longitudinal sections, intercalated discs appear as darkly stained transverse lines crossing the muscle fibers. They may be difficult to distinguish in some hematoxylin and eosin (H&E)-stained sections.
In the upper figure, some of the intercalated discs are highlighted in light green.
Cardiac muscle. Staining: HE. Medium magnification.
Cardiac muscle. Staining: HE. Medium magnification.