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).
Microscopic Anatomy and Contraction of Skeletal Muscle. We have already examined the structure of skeletal muscle as seen with the light microscope. As you know, skeletal muscle tissue has alternating light and dark bands, giving it a striated appearance. The electron microscope shows that these bands are due to the arrangement of myofilaments in a muscle fiber
Skeletal muscle is a form of striated muscle tissue which is under the voluntary control of the somatic nervous system. It is one of three major muscle types, the others being cardiac muscle and smooth muscle. Most skeletal muscles are attached to bones by bundles of collagen fibers known as tendons.
Skeletal muscle is responsible for all voluntary movements, such as running . Also involved in involuntary actions, such as breathing, shivering and maintaining posture. Cardiac muscle is responsible for the beating action of the heart. Smooth muscle creates the movement in many hollow internal organs, such as the gut, bladder, and blood vessels, and is under the control of the autonomic nervous system. All 3 muscle types use the same sliding filament mechanism. (6/18/2013) Anatomy…