Cardiac muscle is striated. Cardiac muscle cells have a single central nucleus, numerous mitochondria, and large amounts of stored glycogen; intercalated discs form junctions between adjacent cardiac muscle cells.
Cardiac muscle cells differ from skeletal muscle fibers
Cardiac muscle cells are almost totally dependent on aerobic respiration so includes lots of glycogen and lipid
T tubules of cardiac muscle cells are shorter than skeletal muscle cells
Cardiac muscle has larger number of blood vessels
Cardiac muscle cells contract without NS stimulation
Cardiac muscle cells interconnected by specialized cell junctions called intercalated discs