File:Ingalls1918 plate 4 fig2.jpg

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Plate 4

1. Dorsal and slightly lateral view of model. X 100. Reduced. On the left the body-stalk is cut across.

2. Left lateral view of model. X 100. Reduced. On the right the body-stalk, cut in the plane of the sections, shows a large vessel; running downward and forward, also in the plane of the sections, a small portion of the amnion has been left. In the embryonic disc are seen the irregular ectodermic folds, its anterior extremity is undermined. The irregularity in the anterior part of the yolk-sac is due to a tear. The upper part of the model has been separated from the lower by sawing through it parallel with the blastoderm; it is this upper piece which is represented in Fig. 1.


Contribution No.23: Figures | Plate 1 | Plate 2 | Plate 3 | Plate 4 | Plate 1 | Carnegie - Contributions to Embryology | Carnegie stage 8 | Category:Carnegie Stage 8 | Historic Embryology Papers
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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)

Reference

Ingalls NW. A human embryo before the appearance of the myotomes. (1918) Contrib. Embryol., Carnegie Inst. Wash. No.23 Publ. 227, 7:111-134.



Cite this page: Hill, M.A. (2024, June 19) Embryology Ingalls1918 plate 4 fig2.jpg. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/File:Ingalls1918_plate_4_fig2.jpg

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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)

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current12:07, 2 January 2013Thumbnail for version as of 12:07, 2 January 20131,000 × 739 (151 KB)Z8600021 (talk | contribs)==Plate 4== 1. Dorsal and slightly lateral view of model. X 100. Reduced. On the left the body-stalk is cut across. 2. Left lateral view of model. X 100. Reduced. On the right the body-stalk, cut in the plane of the sections, shows a large vessel; runn