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Fig. 9. Graphic Reconstruction of the Umbilical Cord of a Human Embryo 12.5 mm | ==Fig. 9. Graphic Reconstruction of the Umbilical Cord of a Human Embryo 12.5 mm in Length== | ||
(Mall collection, No. {{CE317}}.) | |||
The figure to the left shows the manner in which the cord has been cut into the portions I, II, and III. On the | The figure to the left shows the manner in which the cord has been cut into the portions I, II, and III. On the | ||
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Section I: Embryonic end of cord, showing ccelomic ring through which protrudes the primitive intestine. Note | '''Section I:''' Embryonic end of cord, showing ccelomic ring through which protrudes the primitive intestine. Note | ||
the position of the proximal intestine (jejunum) and the distal intestine (ileum). To the right and above, the | the position of the proximal intestine (jejunum) and the distal intestine (ileum). To the right and above, the | ||
omphalomesenteric vessels are seen emerging by the side of the intestine. The vein comes from above the gut and | omphalomesenteric vessels are seen emerging by the side of the intestine. The vein comes from above the gut and | ||
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Section II: This section of the cord is farther from the umbilicus, and shows a twist of the structures, somewhat | '''Section II:''' This section of the cord is farther from the umbilicus, and shows a twist of the structures, somewhat | ||
after the manner of the left turn of a screw. The exoccelom with its contents now lies to the right ; the umbilical vessels | after the manner of the left turn of a screw. The exoccelom with its contents now lies to the right ; the umbilical vessels | ||
and allantois have shifted to the left. The allantois has again increased in size, and lies between the umbilical arteries | and allantois have shifted to the left. The allantois has again increased in size, and lies between the umbilical arteries | ||
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Section III: This section of the cord is still farther from the umbilicus. It shows the amniotic ring, through which | '''Section III:''' This section of the cord is still farther from the umbilicus. It shows the amniotic ring, through which | ||
emerge the omphalomesenteric duct and its vessels. The allantois decreases rapidly in size and becomes lost between | emerge the omphalomesenteric duct and its vessels. The allantois decreases rapidly in size and becomes lost between | ||
the left umbilical artery and the umbilical vein. | the left umbilical artery and the umbilical vein. | ||
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{{Footer}} | {{Footer}} | ||
[[Category:Carnegie Embryo 317]] | |||
Revision as of 17:06, 27 October 2018
Fig. 9. Graphic Reconstruction of the Umbilical Cord of a Human Embryo 12.5 mm in Length
(Mall collection, No. 317.)
The figure to the left shows the manner in which the cord has been cut into the portions I, II, and III. On the right are shown frontal views of the three sections. They are represented as being seniitransparent, in order to give a clear idea of the course of the contained structures.
Section I: Embryonic end of cord, showing ccelomic ring through which protrudes the primitive intestine. Note
the position of the proximal intestine (jejunum) and the distal intestine (ileum). To the right and above, the
omphalomesenteric vessels are seen emerging by the side of the intestine. The vein comes from above the gut and
the artery from below; between them lies the duct, which is still connected with the intestine. A delicate mesenteriolum accompanies these structures for a short distance into the cord (cf. also Fig. 7). The umbilical arteries and
vein are seen in the lower part of the cord. Here the allantois lies between the arteries and becomes obliterated.
Section II: This section of the cord is farther from the umbilicus, and shows a twist of the structures, somewhat
after the manner of the left turn of a screw. The exoccelom with its contents now lies to the right ; the umbilical vessels
and allantois have shifted to the left. The allantois has again increased in size, and lies between the umbilical arteries
and the exoccelom.
Section III: This section of the cord is still farther from the umbilicus. It shows the amniotic ring, through which
emerge the omphalomesenteric duct and its vessels. The allantois decreases rapidly in size and becomes lost between
the left umbilical artery and the umbilical vein.
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. (2024, May 8) Embryology Cullen1916 fig09.jpg. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/File:Cullen1916_fig09.jpg
- © Dr Mark Hill 2024, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G
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| 17:03, 27 October 2018 |  | 2,077 × 3,333 (1.2 MB) | Z8600021 (talk | contribs) | Fig. 9. Graphic Reconstruction of the Umbilical Cord of a Human Embryo 12.5 mm. in Length. (Mall collection, No. {{CE317}}.) The figure to the left shows the manner in which the cord has been cut into the portions I, II, and III. On the right are sh... |
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