A whole skeletal muscle is thought about an body organ of the muscular system. Each body organ or muscle consists of bones muscle tissue, connective tissue, nerve tissue, and blood or vascular tissue.

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Skeletal muscle vary considerably in size, shape, and also arrangement of fibers. They range from incredibly tiny strands such as the stapedium muscle of the middle ear to big masses such as the muscle of the thigh. Some skeletal muscle are large in shape and some narrow. In part muscles the fibers room parallel to the long axis of the muscle; in some they converge to a narrow attachment; and also in some they are oblique.

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Each skeleton muscle fiber is a single cylindrical muscle cell. An separation, personal, instance skeletal muscle may be comprised of hundreds, or also thousands, of muscle fibers bundled together and wrapped in a connective organization covering. Every muscle is surrounded by a connective organization sheath dubbed the epimysium. Fascia, connective tissue external the epimysium, surrounds and also separates the muscles. Parts of the epimysium task inward to division the muscle into compartments. Every compartment has a bundle the muscle fibers. Every bundle of muscle fiber is called a fasciculus and is surrounded by a layer of connective tissue dubbed the perimysium. In ~ the fasciculus, each individual muscle cell, called a muscle fiber, is surrounding by connective tissue referred to as the endomysium.

Skeletal muscle cells (fibers), like various other body cells, are soft and also fragile. The connective tissue extending furnish support and protection because that the delicate cells and enable them to resist the pressures of contraction. The coverings also carry out pathways for the i of blood vessels and nerves.

Commonly, the epimysium, perimysium, and endomysium extend beyond the fleshy component of the muscle, the ship or gaster, to type a thick ropelike tendon or a broad, flat sheet-like aponeurosis. The tendon and aponeurosis type indirect attachments from muscles to the periosteum of skeleton or come the connective organization of various other muscles. Typically a muscle spans a joint and is attached come bones by tendons at both ends. Among the skeletal remains reasonably fixed or secure while the other end moves together a result of muscle contraction.

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Skeletal muscles have an plentiful supply that blood vessels and also nerves. This is straight related come the primary function of skeletal muscle, contraction. Prior to a skeleton muscle fiber deserve to contract, it has to receive an advertise from a nerve cell. Generally, one artery and at least one vein accompany each nerve that penetrates the epimysium the a skeletal muscle. Branches of the nerve and blood vessels monitor the connective tissue materials of the muscle of a nerve cell and with one or more minute blood vessels dubbed capillaries.