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Manual of human histology . t subse-quently, in the proper convoluted tubules, attain one of 0033,though again somewhat constricted close to their commence-ment. The membrana propria in the convoluted tubules is moredelicate (0-0003—OOOO^^) and isolated with more difficulty,the epithelium, on the contrary, is usually thicker, with cellsmeasuring 0-008—0-012 in width, and 0-004~0-005 inthickness; whilst in the straight tubules the cells are not morethan 0-004—0-006 wide, and0-004 thick. Physiologically, italso seems to me worthy of remark,that the last cells have clear, non-granular contents, w
Manual of human histology . t subse-quently, in the proper convoluted tubules, attain one of 0033,though again somewhat constricted close to their commence-ment. The membrana propria in the convoluted tubules is moredelicate (0-0003—OOOO^^) and isolated with more difficulty,the epithelium, on the contrary, is usually thicker, with cellsmeasuring 0-008—0-012 in width, and 0-004~0-005 inthickness; whilst in the straight tubules the cells are not morethan 0-004—0-006 wide, and0-004 thick. Physiologically, italso seems to me worthy of remark,that the last cells have clear, non-granular contents, whence, also, themedullary substance, in the blood-less condition, appears whitish,whilst the cortical exhibits a yel-lowish hue. The Malpighian bodies presenta very peculiar structure. Theyare to be regarded as appendagesof the convoluted tubuli uriniferi,and contain imbedded in their epi-thelium, and, as it may be said,entirely filling their cavity, acompact, rounded vascular plexus—the glomerulus Malpighianus, the. Fig. 247. 1, a Malpighian corpuscle, A, with the tubulus uriniferus springingfrom it, B, C; Human, x 300 diam.; figure half-diagrammatic: a, membrane of theMalpighian body, continuous at b, with the membrana iiropria of the convolutedtubule; c, epithelium of the Malpighian body; d, that of the tubule; e, detachedepithelium ; /, vas afferens ; g, vas efferens ; h, glomerulus Malpighianus. 2, threeepithelial cells from the convoluted tul)ule, x 350 diam.; one with oil-drops. THE URINARY ORGANS. 199 structure of which will be afterwards described. The samemenibrana propria which surrounds the tubuli uriniferi, alsosomewhat thickened, (0-0005—00008) invests these bodies(fig. 247 a); and the epithelium is likewise continued into thecapsules thus formed, only that its cells are smaller and lessdistinct and invest the vascular coil on the side directedtowards the canal of the emergent tubulus uriniferus. Thislatter, generally somewhat constricted (fig. 247, B),
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Keywords: ., bookcentury1800, bookdecade1850, booksubjecthistolo, bookyear1853