Manual of pathology : including bacteriology, the technic of postmortems, and methods of pathologic research . Wng tissues wiU be most active. blood from adjacent capillaries whose contained blood is, as a matterof course, directed in the line of least resistance. Coincident with thechanges just mentioned dilatation of anastomosing or collateral arteriesoccurs, increasing the amount of blood traveling through those the anastomosis between the artery involved and the arterieswhose circulation still remains intact is sufficiently free, there is quicklyformed a circulation adequate t
Manual of pathology : including bacteriology, the technic of postmortems, and methods of pathologic research . Wng tissues wiU be most active. blood from adjacent capillaries whose contained blood is, as a matterof course, directed in the line of least resistance. Coincident with thechanges just mentioned dilatation of anastomosing or collateral arteriesoccurs, increasing the amount of blood traveling through those the anastomosis between the artery involved and the arterieswhose circulation still remains intact is sufficiently free, there is quicklyformed a circulation adequate to maintain the nutrition in the previ- CIRCULATUKY OlSTi; U H ANCES. - . ouslv ischemic area. Witli the estalihshment of suflicient collateralcirculation the nutrition and function of the area may be resumed,while the chanj^es that take place in the lodged embolus may V>e [)rac-ticallv those already consitlcred when discussing the changes to whicha thrombus is liable. In the absence of a sufficient circulation in the area, degenerativeor necrotic processes occur. In tin- brain, in the spleen, and. to a. Fig. isi.—Scheme Illustrating the Formation of a Hkmorrhagic Infarc r as a Result or OB»T« a Terminal .\rtery.—(C/ian/<-»n-J5- RJvcn off nt-ivr pmlxilmconliKUOus tissue, the capillarii-s of which arc continuous withe atlected area; as a result of the arterial occlusion and :artery there may tx; a slight alllux of hlcKxl from the veinof conical infarct which on section is wcdKc-shapcd. in draininc X pluurd /. Wxac certain extent, in the kidney, there is not. beyond a given point, aliberal anastomosis between the blood-vessels of adjacent areas. Suchblood-vessels are said to be terminal: this implies that the tree-likebranches given off bv one vascular stem do not communicate freelywith similar branchesof adjacent vessels. The plugging of such vesselsis followed bv death (necrosis) of the area involved, which is now calWlan infarct. When the area remains i
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