CARDIAC MUSCLE – 3
Intercalated disks
The image shows longitudinally sectioned cardiac muscle fibers.
intercalated discs are seen as dark stained bars placed transversely in the fibers.
They are best seen after staining the sections with spetial stains, such as the iron hematoxylin and the phosphotungstic hematoxylin (used to prepare the section seen on this page).
The regular transverse striation (bands) of the cardiac fibers is similar to that of the skeletal muscle.
Cardiac muscle. Staining: Phosphotungstic hematoxylin. Medium magnification.
