Only cardiac muscle has this particular appearance, which is given to it by something called intercalated discs. Cardiac muscle also consists of single muscle cells, called Cardiomyocytes; where something such as skeletal muscle cells are MULTInucleated (more than one cell nucleus).
This photo displays cardiac muscle tissue. This tissue type is striated, branched, and has 1-2 nuclei. Cardiac muscle tissue can be recognized by intercalated disks (dark thickened part). Cardiac muscle cells are bigger than smooth muscle cells and smaller than skeletal muscle cells. They control involuntary movement (the heart).
No bones about it; your bones can’t do much without muscles to move them. You have three major types of muscle tissue known as skeletal, smooth, and cardiac muscle. Learn about all 11 organ systems with the Amoeba Sisters! http://www.youtube.com/watch?v=nnjmrrQ6xOs