File:GemmillStewart1916 fig04.jpg

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Fig. 4. Diagram of urogenital system of twin without the club-foot

Showing the various openings into the bladders and urogenital sinus. In the case of the club-foot twin the arrangement is similar, except that no accessory bladder is present, both ureters opening into the principal bladder.

Note - Clubfoot is a historic term for talipes equinovarus.

Abbreviations
  • Acc. Bl. . . Accessory bladder.
  • R. Umb. Cd. . Rudimentary umbilical
  • Acc. Umb. Cd. Accessory umbilical cord. cord.
  • Am. . . . . Amnion.
  • Rt. H3/p. Ar. .. Right hypogastric artery.
  • A0. . . . . Dorsal aorta.
  • Rt. Ur. . . . Right ureter.
  • Cl. Ft. . . . Club—foot.
  • Rt. Ut. . . . Right uterus.
  • Col. . . . . Fused colon.
  • Rt. Vag. . . Right vagina.
  • Fal. Tb. . . Fallopian tube.
  • CSt. . . . . Connecting stalk.
  • Il. . . . . Ileum.
  • U. G. S. . . Urogenital sinus.
  • II. C’. V. . . Ileo-colic valve.
  • Umb. Cd. . . Umbilical cord.
  • Lt. Hyp. Art. . Left hypogastric artery.
  • Umb. V. . . Umbilical vein.
  • Lt. Ur. . . . Left ureter.
  • Un. Int. . . Fused part of intestine.
  • Lt. Ut. . ,. . Left uterus.
  • Ur. . . . Ureter.
  • Lt. Vag. . . Left vagina.
  • Urach. . . . Urachus.
  • Op. Bl. . . . Opening of bladder into
  • Op. . . Opening from uterus into urogenital sinus.
  • Os Ut. . . . Os uteri.
  • Vag. vagina.
  • Ver. App. . . Vermiform appendix.
  • Pr. Bl. . . . Principal bladder.

Reference

Gemmill JF. and Stewart J. Omphalopagous twins in the human subject. (1916) J Anat Physiol. 50: 316-323.

Cite this page: Hill, M.A. (2026, Mayıs 13) Embryology GemmillStewart1916 fig04.jpg. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/File:GemmillStewart1916_fig04.jpg

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© Dr Mark Hill 2026, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G

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