A textbook of obstetrics . hes passing betweenbladder and rectum; 22$communicating branches from second sacral to cervicalganglion; 23, branch from third sacral nerve to cervical ganglion; 24, second sacralnerve; 25. branches from third sacral nerve to vagina and bladder; 26, branches ig from fourth sacral to cervical ganglion (Frankenhausen). THE FEMALE SEXUAL ORGANS. 39 THE FEMALE SEXUAL ORGANS. The development of the sexual organs may be briefly de-scribed as follows : The development of the genito-urinary organs up to a certainpoint is common in both sexes. In late stages the duct of Wolff
A textbook of obstetrics . hes passing betweenbladder and rectum; 22$communicating branches from second sacral to cervicalganglion; 23, branch from third sacral nerve to cervical ganglion; 24, second sacralnerve; 25. branches from third sacral nerve to vagina and bladder; 26, branches ig from fourth sacral to cervical ganglion (Frankenhausen). THE FEMALE SEXUAL ORGANS. 39 THE FEMALE SEXUAL ORGANS. The development of the sexual organs may be briefly de-scribed as follows : The development of the genito-urinary organs up to a certainpoint is common in both sexes. In late stages the duct of Wolffalmost disappears in the female, while in the male it constitutes thevas deferens ; the Miillerian ducts, on the contrary, atrophy in themale, but form Fallopian tubes, uterus, and vagina in the female. The accompanying illustrations (Figs. 27, 28, 29, and 30)may aid the student to understand the subdivision of the primarycloacal chamber. As they refer to the female embryo, theWolffian ducts are omitted. Fig. 27. Fig. 3°-. Fig. 27.—el, Cloaca which has opened into primitive hind-gut, and commu-nicates with the rectum and allantois; the posterior portion, all, of the latter hascommenced to dilate to form the urinary bladder; m, duct of Midler ; r, rectum. Fig. 28.—The cloaca has divided into a ventral portion, su, the urogenitalsinus, which communicates ventrally with the urethra, //, and the bladder, b, andmore dorsally with v, the vagina, formed by fusion of the ducts of Miiller; r, rectum. Fig. 29.—The perineum or tissues separating the rectum from the urogenitalsinus are well developed ; the neck of the bladder has become constricted to form theprimitive urethra, and is separated from the vaginal passage, though both open intothe common urogenital sinus, s, and the clitoris, c (in the male the rudiment of thepenis), has appeared; r, rectum. Fig. 30.—The urogenital sinus of the female, s, remains as the cleft between thesides of the external aperture of the labia min
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Keywords: ., bookcentury1800, bookdecade1890, bookidtex, booksubjectobstetrics
