. Electro-physiology . FIG. IS.—a, Transverse section of muscle-fibre of Rabbit (bundles of fibrils dark, sarcoplasm clear). (Kolliker.) //, Transverse section of muscle-fibre of Frog, showing on the left cross-sections of the fibrils. (Schiefferdecker.) It is questionable whether the sarcoplasm that surrounds the muscle-columns penetrates also between the individual fibrils: Eollett disputes it; Kolliker assumes a minute amount of inter- stitial matter, identical with the sarcoplasm—it can only be identified under a very high power, and forms an investing sheath along the entire length of eac
. Electro-physiology . FIG. IS.—a, Transverse section of muscle-fibre of Rabbit (bundles of fibrils dark, sarcoplasm clear). (Kolliker.) //, Transverse section of muscle-fibre of Frog, showing on the left cross-sections of the fibrils. (Schiefferdecker.) It is questionable whether the sarcoplasm that surrounds the muscle-columns penetrates also between the individual fibrils: Eollett disputes it; Kolliker assumes a minute amount of inter- stitial matter, identical with the sarcoplasm—it can only be identified under a very high power, and forms an investing sheath along the entire length of each fibril. From this last point of view each muscle-fibre must be re- garded as a bundle of fibrils which are held together by an uneven accumulation of intermediary substance. " According as this accumulation is more or less abundant, the muscle-columns are more or less well defined, larger or smaller " (Kolliker). The comparative proportion of the two chief constituents of a muscle-fibre, the fibrils (Kuhne's rhabdia) and the sarcoplasm, varies, as we have said, in different animals, and in different
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Keywords: ., bo, bookcentury1800, bookdecade1890, bookpublisherlondonmacmillan
