From Embryology
Bailey322.jpg(766 × 476 pixels, file size: 62 KB, MIME type: image/jpeg)

Fig. 322. From a model of the cloaca and the surrounding structures in a human embryo of 6.5 mm

Franz Keibel (1861-1929)

  • The portion of the gut immediately caudal to the attachment of the allantoic duct becomes dilated to form the cloaca which at first is a blind sac, its cavity being separated from the outer surface of the embryo by the cloacal membrane (Fig. 322).
  • The openings of the mesonephric ducts, which primarily were situated in the lateral cloacal wall (p. 359), are situated after the separation in the dorso-lateral wall of the urogenital sinus (compare Figs. 322, 323, 324).
Link: Figure in Text

Text-Book of Embryology: Germ cells | Maturation | Fertilization | Amphioxus | Frog | Chick | Mammalian | External body form | Connective tissues and skeletal | Vascular | Muscular | Alimentary tube and organs | Respiratory | Coelom, Diaphragm and Mesenteries | Urogenital | Integumentary | Nervous System | Special Sense | Foetal Membranes | Teratogenesis | Gallery of All Figures
Historic Disclaimer - information about historic embryology pages 
Mark Hill.jpg
Pages where the terms "Historic Textbook" and "Historic Embryology" appear on this site, and sections within pages where this disclaimer appears, indicate that the content and scientific understanding are specific to the time of publication. This means that while some scientific descriptions are still accurate, the terminology and interpretation of the developmental mechanisms reflect the understanding at the time of original publication and those of the preceding periods, these terms and interpretations may not reflect our current scientific understanding.     (More? Embryology History | Historic Embryology Papers)


Bailey FR. and Miller AM. Text-Book of Embryology (1921) New York: William Wood and Co.

Cite this page: Hill, M.A. (2019, July 23) Embryology Bailey322.jpg. Retrieved from

What Links Here?
© Dr Mark Hill 2019, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G

File history

Click on a date/time to view the file as it appeared at that time.

current12:00, 25 January 2011Thumbnail for version as of 12:00, 25 January 2011766 × 476 (62 KB)S8600021 (talk | contribs){{Template:Bailey 1921 Figures}} Category:Human Category:Renal
  • You cannot overwrite this file.