On the proximate cause of albuminous and dropsy, and on the pathology of the renal blood-vessels in Bright's disease / [Sir George Johnson].
- George Johnson
- Date:
- 1850
Licence: Public Domain Mark
Credit: On the proximate cause of albuminous and dropsy, and on the pathology of the renal blood-vessels in Bright's disease / [Sir George Johnson]. Source: Wellcome Collection.
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![upon them, as already described in the arteries, the entire tuft being atrophied, and the capsule shrivelled ; but in the majority of instances, the addition of acetic acid, by rendering the vessels transparent, will show the blood-corpuscles within them ; thus proving, that the blood had been concealed by the opaque and thickened capillary wall, and that the Malpighian vesesls must not be hastily pronounced impervious or bloodless. Inter-tubular capillaries and veins.—The coats of these vessels present no appearance of thickening or of any p]G. 4— Portion of vein, with inter-tnbular capillaries, from the same kidney as Pig. 2. The coats of these vessels present no appearance of thickening; the canal is partially filled with injection. Magnified 200 diameters. other morbid change; they seem to be less numerous than in the healthy kidney, and they probably become atrophied and obliterated, in consequence of the arrested action of the secreting cells. The pathological explanation of these changes in the renal blood-vessels appear to be this. There is an imperfect elimination of the urinary constituents, in consequence of changes in the secreting cells, produced by an effort which they have made to excrete abnormal products. Deficient excretion at once leads to impeded circulation,—the obstruc¬ tion occurring at the very point where the excretion should be effected, viz. in the inter-tubular capillaries. The im¬ pediment reacts backwards upon the Malpighian capillaries, which in a sudden acute attack become ruptured, and allow the blood to escape into the urinary tubes; but when the](https://iiif.wellcomecollection.org/image/b31950292_0012.jp2/full/800%2C/0/default.jpg)
