[Structure of the collagenous framework of skeletal muscle].
The architectonics of the collagenous framework of skeletal muscles of man and rats was studied by methods of rastral and translucent electron microscopy. The structure of the collagenous framework in the field of endomysium, perimysium and muscular tendinous connection is shown to be different which is determined by the morphological features of these structural components of the skeletal muscle. In the endomysium and perimysium the collagenous framework consists of fibrils and fibres of different thickness which form a complicated anastomosing network around muscular fibres and, penetrating the basal membrane, sustain the structural interrelation between them. In the area of the muscular-tendinous connection the collagenous fibres invade the basal membrane between the sarcleemma protrusions and from ramifying endings on its surface. The obtained data suggest that the functional role of the collagenous framework is to unite the muscle fibres into a single system, to synchronously transfer contractions of muscle fibres to the tendon and possibly to partly participate in the process of relaxation of the muscle after contraction.
D000328:Adult; D000368:Aged; D003094:Collagen; D006801:Humans; D008875:Middle Aged; D009132:Muscles / Q000648:ultrastructure*
D003094:Collagen
Stroenie kollagenovogo karkasa skeletnoĭ myshtsy