. Quain's elements of anatomy . S ; HIGHLY MAGNIFIED. (E. A. S.) coats of the blood-vessels. A remarkable character which clastic fibresexhibit in many specimens, is a tendency to curl up at their brokenends; and these ends are not pointed, but abruptly broken across. Theirsize is very various ; the largest in man are nearly ioVotli of an inch in diameter, the smallest perhaps Fig. 60. ^^^ <7 ;o. ®1 not more than yttooo^^i-situations the larucr In somesized fibresprevail ; this is the case with the ^)v^ mM^ Fig. 60.—Cross-section of elastic fibres FROM THE IIGAMENTUM NUCH-E OF THE OX (from
. Quain's elements of anatomy . S ; HIGHLY MAGNIFIED. (E. A. S.) coats of the blood-vessels. A remarkable character which clastic fibresexhibit in many specimens, is a tendency to curl up at their brokenends; and these ends are not pointed, but abruptly broken across. Theirsize is very various ; the largest in man are nearly ioVotli of an inch in diameter, the smallest perhaps Fig. 60. ^^^ <7 ;o. ®1 not more than yttooo^^i-situations the larucr In somesized fibresprevail ; this is the case with the ^)v^ mM^ Fig. 60.—Cross-section of elastic fibres FROM THE IIGAMENTUM NUCH-E OF THE OX (from a sketch by Mi: T. P. Gostling). ligamenta subflava, where general diameter is about -yjVo theirthofan inch ; in other instances, as inthe vocal chords and in many paitsof the areolar tissue, the elastic fibresare exceedingly fine. In some animals elastic fibres arc met with y3^ofTthof an inch in thickness. In shape they are not cylindrical but angular,as is weU seen in transverse section (fig. GO). AREANGEMEXT OF EIBEES. 61. In certain portions of the areolar tissue, as for instance in that whichlies under the serous and mucous membranes of particular regions, theyellow or elastic fibres are abundant and large, so that they cannot ATellbe overlooked; but in other parts and in the fibrous tissue, they arefew in number, and small, and are then in a great measure hidden bythe white filaments ; in such cases, however, they can generally be Fig. 61.—Magnified view of AREOLAR TISSUE (FROM DIF-FERENT parts) treated withACETIC ACID (Sbarpey). < The white filaments are nolonger seen, and the yellow orelastic fibres with the cell-nucleicome into view, a, a bundle ofwhite fibres, which is swollen outby the effect of the acid, and pre-sents a number of constrictingbands. h shows the branchingof the nearly straight elastic fibresof areolar tissue, and their unioninto a network. rendered conspicuous under the microscope by means of acetic acid^which causes the white filament
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Keywords: ., boo, bookcentury1800, booksubjectanatomy, booksubjecthumananatomy
