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).
Growth of the zebrafish heart from embryo to adult is tracked using colored cardiac muscle clones, each containing many cellular progeny of a single cardiac muscle cell. Here, a large clone of green cardiac muscle cells (top) expands over the surface of many smaller clones in a growing heart. Photo credit: Vikas Gupta
Scientists used 3D printing to generate a matrix scaffold they seeded with cardiomyocytes smooth muscle cells and endothelial cells differentiated from human-induced pluripotent stem cells to generate a cardiac muscle patch in a murine model of myocardial infarction that improves heart function. http://ift.tt/2ocuwrp
mitochondria packed between myofibrils in cardiac muscle the crystalline appearance of the numerous mitochondria is a result of densely packed cristae or infoldings of the inner membrane this design dramatically increases the surface area of the inner mitochondrial membrane in which ATP-producing machinery is embedded colored TEM credit: Science Photo Library
For heart repair, call RNA After attack, small molecules help contracting cells regenerate in mice Mice regrow muscle cells after heart attacks if injected with molecules mimicking RNA involved in cell growth.
Researchers get cardiac muscle cells to grow, repair heart attack damage