File:Cullen1916 fig02.jpg: Difference between revisions
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vitelline arteries and veins are clearly seen on the embryonic side of the yolk-sac. The amnion is now gradually | vitelline arteries and veins are clearly seen on the embryonic side of the yolk-sac. The amnion is now gradually | ||
enveloping the embryo. Compare the situation of the coelom in this with that in the subsequent pictures. There is | enveloping the embryo. Compare the situation of the coelom in this with that in the subsequent pictures. There is | ||
as yet no umbilical cord. For the first stage of its development, | as yet no umbilical cord. For the first stage of its development, See [[:File:Cullen1916 fig03.jpg|Fig. 3]]. folding of the exocoe1om. The arrows indicate the direction that it will follow later. | ||
===Reference=== | ===Reference=== | ||
Revision as of 17:13, 27 October 2018
Fig. 2. A More Advanced Stage in the Formation of the Umbilical Region
(Human embryo, 1.7 mm. long. - Mall series, 391.) (This embryo has been very carefully described by Dr. Walter E. Dandy (Amer. Jour. Anat., 1910, x, 85).
Note the advancing approach of the cranial and caudal portions of the yolk-sac and its division into a main cavity and two recesses, the fore-gut and the hind-gut, into the latter of which the allantois now opens. The vitelline arteries and veins are clearly seen on the embryonic side of the yolk-sac. The amnion is now gradually enveloping the embryo. Compare the situation of the coelom in this with that in the subsequent pictures. There is as yet no umbilical cord. For the first stage of its development, See Fig. 3. folding of the exocoe1om. The arrows indicate the direction that it will follow later.
Reference
Cullen TS. Embryology, anatomy, and diseases of the umbilicus together with diseases of the urachus. (1916) W. B. Saunders Company, Philadelphia And London.
Cite this page: Hill, M.A. (2026, October 30) Embryology Cullen1916 fig02.jpg. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/File:Cullen1916_fig02.jpg
- © Dr Mark Hill 2026, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G
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| 16:57, 27 October 2018 |  | 2,149 × 1,622 (686 KB) | Z8600021 (talk | contribs) | Fig. 2. — A More Advanced Stage in the Formation of the Umbilical Region. (Human embryo, 1.7 mm. long. - Mall series, {{CE391}}.) (This embryo has been very carefully described by Dr. Walter E. Dandy (Amer. Jour. Anat., 1910, x, 85). Note the advan... |
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