. Human embryology and morphology. Embryology, Human; Morphology. THE UKO-GENITAL SYSTEM. 117 anterior layer of the triangular ligament. The female urethra corresponds to the prostatic part of the male urethra above the opening of the sinus pocularis (Figs. 92 and 93). The Hymen is formed at the junction of the vagina with the uro-genital sinus. The terminal parts of the Miillerian ducts, which form the vagina, are at first solid epithelial cords, the epithelial mass being derived from the bulbous terminations of the Wolffian ducts (Berry Hart). After the Miillerian ducts fuse to form the vagi
. Human embryology and morphology. Embryology, Human; Morphology. THE UKO-GENITAL SYSTEM. 117 anterior layer of the triangular ligament. The female urethra corresponds to the prostatic part of the male urethra above the opening of the sinus pocularis (Figs. 92 and 93). The Hymen is formed at the junction of the vagina with the uro-genital sinus. The terminal parts of the Miillerian ducts, which form the vagina, are at first solid epithelial cords, the epithelial mass being derived from the bulbous terminations of the Wolffian ducts (Berry Hart). After the Miillerian ducts fuse to form the vagina they become hollowed out, all but the terminal piece, which forms the hymen and it, as a rule, is perforated (Fig. 94).. os. externum rectum uagina perineal body clitoris hymen. Fig. 94.âA section to show the condition of the Vagina and Uterus at the 7th month of foetal life. Cases occur in which the hymen is a complete or even thick septum, or occasionally the whole vagina may retain the foetal â solid form (atresia vaginae). The Vagina is at first not only solid, but extremely short; the downgrowth of the vesico-vaginal septum adds greatly to its length (Fig. 92 A and B). It is separated off from the uterine segment of the Miillerian duct in the fifth month (Fig. 92 B) by (1) the growth of the external os and formation of the labia; (2) by its epithelium becoming stratified, while that of the uterus and upper half of the cervix remains columnar. The Uterus is formed by the fusion of the Miillerian ducts; its muscular walls and thickened mucous lining appear in the 5 th. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Keith, Arthur, Sir, 1866-1955. London : E. Arnold
Size: 1603px × 1558px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, booksubjectembryol, bookyear1902
