Skeletal muscles

The muscular fabric accounts for 40% of the body weight, that is to say 30 kg for an individual of 75 kg.

The skeletal muscles are principal the constituent Muscles the whole of the striated Muscles. These muscles are under voluntary control of the central nervous system.

Their body contains Blood-vessels, Nerf S, sensors, common conjunctive fabric, and muscular cells. In photonic microscopy (or optics), they present a double longitudinal and transverse striation.

The elementary components of skeletal striated muscular fabric are large cells (or fibers) muscular multinucleate called Rhabdomyocyte S, which present between 40 and 500 Noyaux of form flattened and located in periphery of the cell.

Histologically, on a transverse section of a skeletal muscle in spindle, one observes a muscular conjunctive fabric and fabric alternation: the muscular cells are surrounded by a primary education beam called internal périmysium. Thus, the conjunctive fabric supports and protects fibers (or cells) muscular. it is composed of fibers of collagen and of elastin which traverse all the muscle and divide it into beams. These units formed by the muscular cells and the périmysium which surrounds it go per pair and are surrounded by a secondary beam called the external pérymisium (it supports the Paquets vasculo-highly-strung person muscles). While going towards the two ends of the muscle in spindle, the muscular fabric disappears whereas the conjunctive fabric is maintained and densified to constitute the tendon, solid structure which attaches the muscle to the bone. The conjunctive fabric coats and leads the blood-vessels and lymphatic as well as the nerves which serve the muscle.

The packages vasculo-highly-strung person are surrounded by groups of 3 to 10 by épimysium. To finish a fascia can come to intercalate itself between two muscles or a muscle and a body.

See too

Internal bonds

External bonds

the skeletal muscular system

Random links: