Gynaecology for students and practitioners . rms a por-tion of the permanent kidney, and will receive no further mention. Themesonephros projects under the peritoneum of the dorsal coelomic wallto which it becomes attached by a peritoneal fold called the plica meso-nephrica {see Fig. 50, ). After this fold is formed, the coelomicentoderm of the medio-ventral surface of the mesonephros proliferates DEVELOPMENT OF GENITO-URINARY ORGANS 75 to form the genital streak, which is the precursor of the sex-gland{gonad) {see Fig. 49, ). The mesonephros is at first a large gland, butit soon under
Gynaecology for students and practitioners . rms a por-tion of the permanent kidney, and will receive no further mention. Themesonephros projects under the peritoneum of the dorsal coelomic wallto which it becomes attached by a peritoneal fold called the plica meso-nephrica {see Fig. 50, ). After this fold is formed, the coelomicentoderm of the medio-ventral surface of the mesonephros proliferates DEVELOPMENT OF GENITO-URINARY ORGANS 75 to form the genital streak, which is the precursor of the sex-gland{gonad) {see Fig. 49, ). The mesonephros is at first a large gland, butit soon undergoes atrophic changes which leave the upper part of themesonephric fold empty. This apper empty fold then becomes the jplicadiaphragmatica mesonephrica {see Fig. 51, ), which ultimatelyforms the free edge of the ovario-pelvic or infundibulo-pelvic foldand has received the name of ligamentum suspensorium ovarii. The parts of the Wolffian system which persist in the humanfemale are : (1) remains of the cranial or sexual segment (genital. Fig. 49. Section throtjgh the Abdominal Region of a Human Embryo9-75 mm. long (after Tandler). A., aorta dorsalis ; , art. umbilicalis ;Ch., chorda dorsalis ; B., bowel; , Wolffian duct; , genital glandforming from germ-epithelium ; S., sympathetic plexus ; M., mesonephroswith canals and glomeruli; , vena cava. tubules) which are represented by the EpoopJioron, a structure whichlies in contact with the ovary, and which is sometimes called the par-ovarium or organ of Rosenmhller ; this corresponds to the epididymisin the male {see Fig. , ) ; (2) remains of thecaadal orsecretory (primitive renal) segment, which, are preserved as the paro-ophoron lying between the ovary and the uterus {see Fig. 51, P, p. 77);this corresponds to the paradidymus in the male ; and (3) a portionof the primary urinary duct as the duct of Gartner. This is the homo-logue of the vas deferens of the male {see Fig. 51, ). The Ovar
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectgynecology, bookyear1
