. The comparative anatomy of the domesticated animals. Veterinary anatomy. GENERAL CONSIDERATIONS ON THE STRIPED MUSCLES. 179 Fi?. either of the helicoid disposition of the fibrillse, or of the fusion of the sarcous elements which compose the hitter, according to the admitted opinion as to the structure of the contractile element. The muscular fibres are united parallel to each other to form secondary- fasciculi, which are surrounded by a con- junctival sheath—the perimysium. The secondary fasciculi are lai(i together to constitute more voluminous fasciculi which, in their turn, form the
. The comparative anatomy of the domesticated animals. Veterinary anatomy. GENERAL CONSIDERATIONS ON THE STRIPED MUSCLES. 179 Fi?. either of the helicoid disposition of the fibrillse, or of the fusion of the sarcous elements which compose the hitter, according to the admitted opinion as to the structure of the contractile element. The muscular fibres are united parallel to each other to form secondary- fasciculi, which are surrounded by a con- junctival sheath—the perimysium. The secondary fasciculi are lai(i together to constitute more voluminous fasciculi which, in their turn, form the entire muscle. The conjunctival sheath enve- loping the muscle is named the external perimysium. B. Tendons and Aponeuroses.—The tendons are white, nacreous, round, or flattened cords fixed to the extremities of the long muscles. They are composed of fasciculi of condensed conjunctival tissue, afiectiug a parallel direction, and united to one another by connective sheaths. The aponeuroses belong almost ex- clusively to the wide muscles ; they are formed of several planes of parallel fibres which are not intercrossed in their middle part; at their superficies, how- ever, the fibrous fasciculi are matted toge- ther in a more or less inextricable manner. It is very interesting to study the mode of union of the muscular fibres with the tissue of the aponeuroses and tendons, as well as the reciprocal rela- tions of these two parts. The muscular fibre may be found passing in the same direction as the tendon, or it may fall upon the latter obliquely. In both cases there is no insensible transition between the muscular fibre and the fasciculus of the fibrous tissue ; on the contrary, the contractile fibre terminates by a rounded extremity, which is buried in a corresponding depression in the tendon or aponeurosis. The union of the muscular with the fibrous tissue is very intimate ; when the muscles are submitted to a degree of traction sufficient to cause a rupture, this never happ
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