An entire skeletal muscle is considered a body organ of the muscle system. Each organ or muscle contains skeletal muscle tissue, connective tissue, nerve tissue, and blood or vascular tissue. Some skeletal muscle mass are broad in shape and some narrow. Each skeletal muscle fiber is a solitary round muscle cell. A specific skeletal muscle might be made up of hundreds, and even thousands, of muscle fibers bundled together and wrapped in a connective tissue covering. Each muscle is bordered by a connective tissue sheath called the epimysium. Each bundle of muscle fiber is called a fasciculus and is surrounded by a layer of connective tissue called the perimysium. Within the fasciculus, each individual muscle cell, called a muscle fiber, is surrounded by connective tissue called the endomysium. Skeletal muscle cells, like other body cells, are soft and vulnerable. The ligament and aponeurosis kind indirect attachments from muscles to the periosteum of bones or to the connective tissue of other muscle mass. Usually a muscle spans a joint and is attached to bones by ligaments at both ends. Skeletal muscles have an abundant supply of capillary and nerves. Before a skeletal muscle fiber can contract, it needs to obtain an impulse from a nerve cell. Generally, an artery and at least one capillary come with each nerve that permeates the epimysium of a skeletal muscle. Branches of the nerve and blood vessels adhere to the connective tissue elements of the muscle of a nerve cell and with one or more minute capillary called veins.
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