. A treatise on practical anatomy: for students of anatomy and surgery . arkings. They are both made up of bundles of voluntary or striated muscles act under the influenceof the will; they are composed of a number of delicateprismoidal bundles, which run in the same bundles are held together by the fibrous sheathof the muscle or external perimysium; each bundleis separately invested by the internal perimysium. Abundle is made up of fibres, and each fibre invested byan exceedingly delicate sheath of connective tissue,—theendomysium or sarcolemma. The fibres run for ab
. A treatise on practical anatomy: for students of anatomy and surgery . arkings. They are both made up of bundles of voluntary or striated muscles act under the influenceof the will; they are composed of a number of delicateprismoidal bundles, which run in the same bundles are held together by the fibrous sheathof the muscle or external perimysium; each bundleis separately invested by the internal perimysium. Abundle is made up of fibres, and each fibre invested byan exceedingly delicate sheath of connective tissue,—theendomysium or sarcolemma. The fibres run for about aninch, are about -g-^^ inch in thickness, are flattened bymutual pressure, and terminate either in a tendon oranother fibre continued in the same direction; they donot branch or inosculate except in the heart. Each fibreis composed of extremely delicate fibrillne, 2 o^i^^ i^^^^ ^^thickness, divided into a series of segments yo^^o0 ^^^^(172) MUSCLES. 173 long, and may be likened to a string of beads, each bead^^^^^ inch thick and y^^^^^ inch long; a great number. Fig. 78.—Muscular Tissue. 1, scheme of tlie different parts of striped mnscular fibre: S. sarcolemma ; K, nucleus;2. striation ; F. fibrillse ; X, nerve; E. nucleated nerie-plate ; 2, part of a cross-section: 3,isolated fibrillte: 4, highly mazniSed flbri! of insect muscle; A, Krause-Amicis line; B,anisotropic substance; C, central disk; D, isotropic substance ; 5, separation of disks; 6,cell of heart-muscle of frog; 7, embryonal development of muscular fibre : 8, cells of heart-muscle; 9, cross-section of heart-muscle: 10. unstriped muscle-cells: II, cross-section ofnnstriped muscle-cells ; 12, muscular fibre with tendon ; 13, interfibrillar muscular nerves. of such flbrillae make up a fibre which necessarily exhibitstlie transverse strige due to the division of the fibril intothe separate segments or beads. A single segment of 174 PRACTICAL ANATOMY the fibril is called a muscle-bead or sarcous element;it is c
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectanatomy, bookyear1891
