The diseases of women : a handbook for students and practitioners / by Sir John Bland-Sutton and Arthur E. Giles.

  • Bland-Sutton, John, Sir, 1855-1936.
Date:
1916
Catalogue details

Licence: Public Domain Mark

Credit: The diseases of women : a handbook for students and practitioners / by Sir John Bland-Sutton and Arthur E. Giles. Source: Wellcome Collection.

    31/596 (page 11)
    THE DEVELOPMENT OF THE GENITAL DUCTS Along the outer side of the Wolffian ridge runs the Wolffian duct, and just external to it is the Mullerian duct. The two ducts are attached to the ridge by the urogenital fold, and this merges with the Wolffian mesentery behind the Wolffian body to form the urogenital mesentery (Fig. 6). Fig. 6.—Transverse Section through the Abdominal Region of an Embryo of 25mm. (After Keibel.) <sc. Spinal cord; m. Muscle; sg. Spinal ganglion; v. Vertebra; vc. Vena cava; ao. Aorta; ur. Ureter; ugm. Urogenital mesentery; w. Wolffian duct; md. Mullerian duct; l. Liver; i. Intestine; b. Bladder- ua. Umbilical artery. By this time the Wolffian ducts have opened posteriorly first into the cloaca, and later into the urogenital sinus, when this has become divided off from the rectum. The Mullerian ducts also open into the urogenital sinus. The ureters open at first into the cloaca; the opening does not, however, like that of the Wolffian duct, become transferred to the urogenital sinus : but each ureter becomes implanted