There is debate as to which portion of the vagina is formed from the M�llerian ducts and which from the urogenital sinus by the growth of the sinovaginal bulb . " Dewhurst's Textbook of Obstetrics and Gynaecology " states, " Some believe that the upper four-fifths of the vagina is formed by the M�llerian duct and the lower fifth by the urogenital sinus, while others believe that sinus upgrowth extends to the cervix displacing the M�llerian component completely and the vagina is thus derived wholly from the endoderm of the urogenital sinus . " It adds, " It seems certain that some of the vagina is derived from the urogenital sinus, but it has not been determined whether or not the M�llerian component is involved ."
22.
There is debate as to which portion of the vagina is formed from the M�llerian ducts and which from the urogenital sinus by the growth of the sinovaginal bulb . " Dewhurst's Textbook of Obstetrics and Gynaecology " states, " Some believe that the upper four-fifths of the vagina is formed by the M�llerian duct and the lower fifth by the urogenital sinus, while others believe that sinus upgrowth extends to the cervix displacing the M�llerian component completely and the vagina is thus derived wholly from the endoderm of the urogenital sinus . " It adds, " It seems certain that some of the vagina is derived from the urogenital sinus, but it has not been determined whether or not the M�llerian component is involved ."
23.
There is debate as to which portion of the vagina is formed from the M�llerian ducts and which from the urogenital sinus by the growth of the sinovaginal bulb . " Dewhurst's Textbook of Obstetrics and Gynaecology " states, " Some believe that the upper four-fifths of the vagina is formed by the M�llerian duct and the lower fifth by the urogenital sinus, while others believe that sinus upgrowth extends to the cervix displacing the M�llerian component completely and the vagina is thus derived wholly from the endoderm of the urogenital sinus . " It adds, " It seems certain that some of the vagina is derived from the urogenital sinus, but it has not been determined whether or not the M�llerian component is involved ."
24.
There is debate as to which portion of the vagina is formed from the M�llerian ducts and which from the urogenital sinus by the growth of the sinovaginal bulb . " Dewhurst's Textbook of Obstetrics and Gynaecology " states, " Some believe that the upper four-fifths of the vagina is formed by the M�llerian duct and the lower fifth by the urogenital sinus, while others believe that sinus upgrowth extends to the cervix displacing the M�llerian component completely and the vagina is thus derived wholly from the endoderm of the urogenital sinus . " It adds, " It seems certain that some of the vagina is derived from the urogenital sinus, but it has not been determined whether or not the M�llerian component is involved ."
