. Electro-physiology. Electrophysiology. ORGANISATION AND STRUCTURE OF MUSCLE 13 proportions in comparison with the fibrillar stratum (Fig. 5, A, £). A transverse section through the centre of such a cell. FIG. 5.—A, Section through part of the muscular layer of Afniris Jiniilii-ii'iiiilcs; a, vesicular swellings of sarco- plasm ; /3, contractile substance ; y, cell-nucleus. (R. Leukart.) B, Isolated muscle-cells of Ascnris, from the Eel. (Hertwig.) shows the contractile substance in a horse-shoe figure, with the sarcoplasm rising within it; near the ends of the fibres only a ring of contracti
. Electro-physiology. Electrophysiology. ORGANISATION AND STRUCTURE OF MUSCLE 13 proportions in comparison with the fibrillar stratum (Fig. 5, A, £). A transverse section through the centre of such a cell. FIG. 5.—A, Section through part of the muscular layer of Afniris Jiniilii-ii'iiiilcs; a, vesicular swellings of sarco- plasm ; /3, contractile substance ; y, cell-nucleus. (R. Leukart.) B, Isolated muscle-cells of Ascnris, from the Eel. (Hertwig.) shows the contractile substance in a horse-shoe figure, with the sarcoplasm rising within it; near the ends of the fibres only a ring of contractile substance, enclosing a cleft filled with proto- plasm, is exhibited. In many cases the similarity of arrangement, in transverse section, of the fibrils of the longitudinal muscular layer of worms, and the involuted muscle - lamella of certain cnidarians, is very striking. The muscle-cells of most other worms agree in their finer structure with the forms described, being either of a fiat, a hollow, or more frequently a tubular type. The only differences are in the size and arrangement of the separate elements, and also in the comparative develop- ment of volume of the sarcoplasm and con- tractile substance. The fibrillated structure of the contractile tissue is not always easy to distinguish, but—cf. Ehode () on the musculature of Chs^topoda—appears to be very generally. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Biedermann, W. (Wilhelm), 1852-1929; Welby, Frances A. (Frances Alice). London : Macmillan
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Keywords: ., bo, bookcentury1800, bookdecade1890, bookpublisherlondonmacmillan
