Quain's elements of anatomy . s on the outside(fig. 63, a), and a variable amount of the same tissue (d, e) lies ])etween thefasciculi into which the smaller bundles are grouped, separating themfrom one another, and also occurring, in greater amount, between thelargest fasciculi (c). It is in these areolar tissue septa that the blood-vessels and lymphatics of a tendon or ligament run. The surface of a tendon or of any other part consisting of thistexture, appears marked across the direction of the fasciculi withalternate light and dark streaks, which give it a peculiar aspect, not AREANGEMENT
Quain's elements of anatomy . s on the outside(fig. 63, a), and a variable amount of the same tissue (d, e) lies ])etween thefasciculi into which the smaller bundles are grouped, separating themfrom one another, and also occurring, in greater amount, between thelargest fasciculi (c). It is in these areolar tissue septa that the blood-vessels and lymphatics of a tendon or ligament run. The surface of a tendon or of any other part consisting of thistexture, appears marked across the direction of the fasciculi withalternate light and dark streaks, which give it a peculiar aspect, not AREANGEMENT OF FIBRES. 63 unlike that of a watered ribbon. This appearance is owing to the wavyconrse of the filaments, for when the light falls on them their bendino-snaturally give rise to alternate lights and shadows. The fibrous and areolar tissues thus agreeing in their ultimate structure,it is not to be wondered at that sometimes the limits between the twoshould be ill-defined, and that the one should pass by inconspicuous Fig. Fig. 63.—Part of a moderately large tendon in transverse section (E. A. S.) a, areolar sheath of the tendon, with the fibres for the most part running transversely,but with two or three longitudinal bundles, 6 ; I, lymphatic cleft in the sheath ; imme-diately over it a blood-vessel is seen cut across and on the other side of the figure a smallartery is shown cut longitudinally ; c, large septum of areolar tissue ; d, smallerseptum ; e, still smaller septum. The irregularly stellate bodies are the tendon cellsin section. gradations into the other. Instances of such a transition may be seen inmany of the fasciae : these at certain parts consist of dense areolar tissue,but on being traced farther are seen gTadually to become fibrous ; andfascia, which in one body are areolar in character, may be decidedlyfibrous in another. In the elastic tissue, there is a great proportionate development ofthe elastic fibres, the white bundles being relatively few and ind
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Keywords: ., boo, bookcentury1800, booksubjectanatomy, booksubjecthumananatomy
