. The cat : an introduction to the study of backboned animals, especially mammals. Cats; Anatomy, Comparative. Fig. 110.—Semi-diagrammatic representation of a Malpighian Body in its relation to the Uriniferous Tube. Magnified 300 diameters. a. Capsule of the Malpighian body continuous with (b), the membrana propria of the coiled uriniferous tube. c. Epithelium of the Malpighian body. d. Epithelium of the uriniferous tube. e. Detached epithelium. /. Afferent vessel. g. Efferent vessel. h. Convoluted vessels of the Fig. 111.—Diagram showing the relation of the Malpighian Body to the
. The cat : an introduction to the study of backboned animals, especially mammals. Cats; Anatomy, Comparative. Fig. 110.—Semi-diagrammatic representation of a Malpighian Body in its relation to the Uriniferous Tube. Magnified 300 diameters. a. Capsule of the Malpighian body continuous with (b), the membrana propria of the coiled uriniferous tube. c. Epithelium of the Malpighian body. d. Epithelium of the uriniferous tube. e. Detached epithelium. /. Afferent vessel. g. Efferent vessel. h. Convoluted vessels of the Fig. 111.—Diagram showing the relation of the Malpighian Body to the Urini- ferous Ducts and Blood-vessels. a. One of the arteries. a'. A branch passing to the glomerulus. c. Capsule of the Malpighian body. t. Uriniferous tubes. e', e'. Efferent vessels, which subdivide in the plexus (p), surrounding the tube, and finally terminate in the branch of the renal vein (c). which leaves the glomerulus, and breaks up into another network or plexus (Fig. Ill, p) of capillaries surrounding the tubules, whence arise other veins, which convey the blood ultimately to the renal vein. Thus we have in the kidney a multitude of minute special circulations, each of which is analogous to the portal system or that of the coronary vessels of the heart. The function of the kidney is, as has been said, to remove nitrogenous waste products and salts from the blood by the secretion and excretion of urine, and it thus supplements the action of the lungs by the removal of matters which escape the action of the pulmonary organs. The blood comes, as we have seen, to the kidneys direct from the abdominal aorta, and is therefore as pure as when it leaves the left ventricle. In circulating through the kidney it is still further purified, namely, from its nitrogenous waste matters, and it also loses more carbonic acid by the formation of urine, than it acquires by any wear and tear of the tissues of the gland. Thus the blood which leaves the kidney is at its maximum. Plea
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectanatomy, bookyear1881
