File:Keibel Mall 2 609.jpg

From Embryology

Original file(1,200 × 753 pixels, file size: 130 KB, MIME type: image/jpeg)

Fig. 609 a and b. Part of a transverse section through the embryo 2.5 mm greatest length 13-14 pairs of primitive segments

Embryo Pfannenstiel III from the collection of the late Professor Pfannenstiel, Kiel.)

The section passes through the cloacal membrane and its exact position may be seen from the adjacent figure b. The mesoderm is still quite loosely aggregated. Between it and the entoderm there is at the upper edge of the figure a fully-formed portion of the rete peri-intestinale, and further down there are cell chains and masses (to the left of the cloaca) from which new networks of the rete are forming. The section shows at two places, to the right and left of the cloacal membrane, large cells partly multinucleate, partly filled with yolk granules and partly free from them, and lying free between the mesoderm and endoderm. These cells may be termed wandering cells and hypothetically may be interpreted as primary genital cells.

Embryology - 26 May 2024    Facebook link Pinterest link Twitter link  Expand to Translate  
Google Translate - select your language from the list shown below (this will open a new external page)

العربية | català | 中文 | 中國傳統的 | français | Deutsche | עִברִית | हिंदी | bahasa Indonesia | italiano | 日本語 | 한국어 | မြန်မာ | Pilipino | Polskie | português | ਪੰਜਾਬੀ ਦੇ | Română | русский | Español | Swahili | Svensk | ไทย | Türkçe | اردو | ייִדיש | Tiếng Việt    These external translations are automated and may not be accurate. (More? About Translations)

Felix W. The development of the urinogenital organs. In Keibel F. and Mall FP. Manual of Human Embryology II. (1912) J. B. Lippincott Company, Philadelphia. pp 752-979.

XIX Development of the Urinogenital Organs: Excretory Glands and their Ducts | Reproductive Glands and their Duct | Urogenital Union | External Genitalia | Figures | Literature
Historic Disclaimer - information about historic embryology pages 
Mark Hill.jpg
Pages where the terms "Historic" (textbooks, papers, people, recommendations) 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, interpretations and recommendations may not reflect our current scientific understanding.     (More? Embryology History | Historic Embryology Papers)

Cite this page: Hill, M.A. (2024, May 26) Embryology Keibel Mall 2 609.jpg. Retrieved from

What Links Here?
© Dr Mark Hill 2024, 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.

current07:22, 20 February 2014Thumbnail for version as of 07:22, 20 February 20141,200 × 753 (130 KB)Z8600021 (talk | contribs)==Fig. 609 a and b. Part of a transverse section through the embryo Pfannenstiel III, 2.5 mm greatest length and with 13-14 pairs of primitive segments== (From the collection of the late Professor Pfannenstiel, Kiel.) The section passes through the ...