. Obstetrics: the science and the art. , or beyond the white zone orzona pellucida, that are to be seen the smallergranules of the cumulus or acervulus, sothat the globular ovum above representedis bounded by the transparent or white zone. These outside granules are remains of the granular mem-brane that lines the inner concentric membrane of the Graafianfollicle. 232. Perhaps the physiologists go too far in calling it a granularmembrane. It consists of innumerable grains that settle themselves,touching each other, upon the inner wall of the vesicle, like sedimentin a vial, or lees in a cask o
. Obstetrics: the science and the art. , or beyond the white zone orzona pellucida, that are to be seen the smallergranules of the cumulus or acervulus, sothat the globular ovum above representedis bounded by the transparent or white zone. These outside granules are remains of the granular mem-brane that lines the inner concentric membrane of the Graafianfollicle. 232. Perhaps the physiologists go too far in calling it a granularmembrane. It consists of innumerable grains that settle themselves,touching each other, upon the inner wall of the vesicle, like sedimentin a vial, or lees in a cask of wine. I do not deny that they depositthemselves thus under the forces of a vital affiinity, and it is evenprobable that they do so; but whenever the vesicle is punctured,this so-called membrane becomes disintegrated, and floats out as loosegrains along with the yelk-ball; great multitudes of them adheringto it; many being entirely disconnected, while some of them sticktogether in laminse, or clusters, or acervuli. This granular mem-. 122 THE OVARIES. brane, or tunica granulosa, is thickest, in general, at tliat segment oftlie Graafian vesicle wliicli is nearest the surface of the albuginea,and there it forms a small heap—an acervulus or cumulus, whichhas been by Baer called the cumulus proligerus or discus is in the apex of this cumulus or cone that the egg is found, andit is generally, not always, among the debris of this acervulus thatthe microscope reveals the yelk, with its bright pellucid zone. 233. Upon referring again to the above figure, the Student willsee that in the yelk-ball, amidst its vitellary corpuscles, there is pic-tured a clear, transparent, oval vesicle, with a dark spot upon ^his is the germinal vesicle, sometimes called Purkinjeanvesicle, and the dark spot is the germinal spot, or maculse ger-minativse of Eudolph Wagner, which M. Coste calls the t a c h eembry onaire. 234. Such, in general terms, is the human ovary, which, I repeat,co
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Keywords: ., bookcentury1800, bookdecade1860, booksubjectobstetrics, bookyear1
