Outlines of the diseases of women / by John Phillips.

  • Phillips, John.
Date:
1897
Catalogue details

Licence: Public Domain Mark

Credit: Outlines of the diseases of women / by John Phillips. Source: Wellcome Collection.

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    urogenital sinus:—i.e., a cavity common to the urinary and genera- tive functions. External to the Wolffian duct and parallel with it the epithe- lium becomes thickened and invaginates (Fig. 23 : 2), ultimately forming a tube, the Mullerian duct: its distal or upper end opens freely into the pleuro-peritoneal cavity, while the lower enters the urogenital sinus. Later, it unites with its fellow of the opposite side to form a single tube before entering the sinus (Fig. 24: II, U). Fig. 24. Development of the internal generative organs. I. Undifferentiated condition. D. Reproductive gland, lying on the tubules of the Wolffian body. W. Wolffian duct. M. Miillerian duct. S. Urogenital sinus. II. Transformations in the female. F. Fimbria, with the hydatid h'. T. Fallopian tube. U. Uterus. S. Urogenital sinus. 0. Ovary. P. Parovarium. (From Landois & Stirling's Physiology.) Gartner's duct (dotted line 11.) is seen entering the urogenital sinus. On the inner side of the projection formed by the Wolffian body is produced a thickened layer of germinal epithelium (Fig. 23 : 6), the cells being columnar in shape; scattered through these are larger cells, the so-called primordial ova (Fig. 23 : 5). This layer lies over the mesoblast, and processes of the germinal epithelium grow down into it, forming tubes containing ova. In this way the ovary is produced: it will be seen that this organ and the Miil- lerian duct (the future Fallopian tube) arise on opposite sides of the intermediate cell-mass.