What is the skeletal muscle?

Answer 1

There are three types of muscle tissue: skeletal, smooth, and cardiac.

Skeletal muscle tissue is a voluntary type of muscle tissue that is used in the contraction of skeletal parts. It is striated (alternating with light and dark bands, called striations) and is attached to bones. A single skeletal muscle fiber is very long and has many nuclei, located at the periphery of the cell. Individual muscle fibers are parallel to each other.

Smooth muscle tissue is found in the walls of hollow internal organs and blood vessels. It is involuntary, nonstriated, and it's muscle fibers are small, thickest in the middle, and tapered at each end, containing single, centrally located nuclei. Smooth muscle tissue helps to narrow the lumen of blood vessels, physically break down and move food along the GIT as well as move fluids through the body and eliminate wastes.

Cardiac muscle tissue is found only in the walls of the heart and it is striated but also involuntary. It's muscle fibers are branched, and usually have only one centrally located nucleus. cardiac muscle tissue has intercalated discs that transverse thickening of the plasma membrane attached to the muscle fibers from end-to-end. It contains cell junctions that strengthen cardiac muscle and holds the fibers together during its vigorous contractions and cell junctions that also provide a quick route for conduction of electrical impulses.

Answer 2

Skeletal muscle is a form of striated muscle tissue existing under control of the somatic nervous system- i.e. It is voluntarily controlled. It is one of three major muscle types, the others being cardiac and smooth muscle. As its name suggests, most skeletal muscles are attached to bones by bundles of collagen fibers known as tendons.

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