Buckmaster's Elements of animal physiology / by John Angell.

  • Angell, John
Date:
1866
Catalogue details

Licence: Public Domain Mark

Credit: Buckmaster's Elements of animal physiology / by John Angell. Source: Wellcome Collection.

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    fibre is invested. It is supposed to consist of modified areolar tissue. 93-—Sarcolemma. A primitive muscular fibre broken across, showing the imtorn sarcolemma connecting the fragments. Organic or Non-Striated Muscular Fibre con- sists of minute nucleated fusiform (spindle-shaped) cells, united into minute flattened bands of a pale yellowish colour, 1-3,000th to 1-2,000th inch in diameter. Some anatomists suppose these bands to interlace together, while other anatomists deny such Fig. 94.—Nok-Striated Muscular Fibre. A. Band of fibre composed offusiform or spindle-shaped cells, showing a a, the cells, and b their nuclei. B. A single cell more highly magni- fied. C. A single cell treated with acetic acid to render the elongated imcleus more distinct. to be the case, and regard them as parallel. Un- sfriated fibre is destitute of sarcoleni77ia: when treated with nitric acid it splits up into its primitive structural elements, which consist of spindle-shaped cells with oblong nuclei: these cells have been termedi cotitractile fibre cells. Unstriped muscle is found in the coats of the alimentary canal, and of the bladder, veins and