
Myocardium
Longitudinal sections of cardiac muscle fibers in the myocardium display intercalated discs and myobrils. 400x, 1000x

Muscle fibers
Longitudinal sections of cardiac muscle fibers in the myocardium display intercalated discs and myobrils. 400x, 1000x

Nuclei
Longitudinal sections of cardiac muscle fibers in the myocardium display intercalated discs and myobrils. 400x, 1000x

Myofibrils
Longitudinal sections of cardiac muscle fibers in the myocardium display intercalated discs and myobrils. 400x, 1000x

Intercalated discs
Longitudinal sections of cardiac muscle fibers in the myocardium display intercalated discs and myobrils. 400x, 1000x

Cross striations
Longitudinal sections of cardiac muscle fibers in the myocardium display intercalated discs and myobrils. 400x, 1000x

Capillaries
Longitudinal sections of cardiac muscle fibers in the myocardium display intercalated discs and myobrils. 400x, 1000x