Elements of pathological anatomy . vascularity of these little bodies is much greater, I am disposed to think,than is usually imagined. That they are liberally supplied with vessels is atonce indicated by their florid complexion, by the astonishing rapidity of theirgrowth, by the facility with which they bleed when touched, and by the factthat they become hard and tumid if filled with injecting matter. The arteries,the precise number of which is not known, having entered the base of eachelevation, soon separate into arborescent branches, which freely anastomosewith each other, as well as with


Elements of pathological anatomy . vascularity of these little bodies is much greater, I am disposed to think,than is usually imagined. That they are liberally supplied with vessels is atonce indicated by their florid complexion, by the astonishing rapidity of theirgrowth, by the facility with which they bleed when touched, and by the factthat they become hard and tumid if filled with injecting matter. The arteries,the precise number of which is not known, having entered the base of eachelevation, soon separate into arborescent branches, which freely anastomosewith each other, as well as with those in the granulations immediately these arteries are corresponding veins, which carry away theblood which is not required for the nourishment of the part, the effusion oflymph, and the secretion of pus, with which the abraded surface is usuallycovered. Both classes of vessels are generally varicose, and much convoluted,as in Fig. 16, from Mr. Liston : a, represents the free surface of the injected Fig. granulations ; 6, the attached surface. Whether the nerves and absorbents areof new formation, or merely elongations of those that previously existed,it is impossible to determine. The latter supposition is probably the trueone. Granulations are often very sensitive. This, however, is not the case everywhere, or under all circumstances. In the cutaneous and cellular tissues, thegranulations are, all other things being equal, incomparably more sensitive than gO CICATRIZATION. in the tendons, aponeuroses, and ligaments. The same thing is true with respectto the granulations of the bones, except when they spring from the cancellatedstructure, in which case they are frequently so tender that it is impossible to touchthem without inducing severe pain. These little bodies are also more sensi-tive when there is much inflammation, and in persons of an irritable and worn-out constitution than in such as are healthy and robust. In some instances,especially in o


Size: 2534px × 987px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: ., bookcentury1800, bookdecade1840, bookpublisherphiladelphiaedbarr