File:Finley1923 Plate 2.jpg

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Plate 2

Fig. 7. Drawing of a growing tip, showing red blood-cells as they first appear, seen at the edge of the head plexus in a human embryo 28 mm. in length (No. 1240a, total mount). The club-shaped cellular mass has an indefinite connection with the main angioblastic plexus. X930.

Fig. 8. Drawing of a growing tip at the edge of the head plexus in a human embryo 23 mm. in length (No. 966). Several well-defined endothelial cells can be made out at the edge of the angioblastic strand, and there is a fine filamentous strand at the extreme tip, which appears to be an endothelial process. X930.

Fig. 9. Drawing of a growing tip at the edge of the head plexus in a human embryo 28 mm. in length (No. 1240a, total mount). Two cells with clear, colorless cytoplasm may be observed. X930.

Fig. 10. Drawing of a capillary from the third zone of the head plexus in a human embryo 19 mm. in length (No. 431). The capillary is seen to be empty save for three nucleated red blood-cells. X930.

Fig. 11. Drawing of a typical growing tip at the edge of the head plexus in a human embryo 26.4 mm. in length (No. 1008). X930.

Fig. 12. Drawing of a strand of early red cells, containing a slight amount of hemoglobin, and having no apparent connection with the main angioblastic plexus. Taken from a total mount of the scalp of a human embryo 23 mm. in length (No. 1358/, total mount). X930.

Fig. 13. Drawing of a chain of early red cells, similar to that seen in figure 12, showing no connections with the main angioblastic plexus. Taken from a total mount of the scalp of a human embryo 23 mm. in length (No. 1358/, total mount). X930.


1923 Head Subcutaneous Plexus: Plate 1 | Plate 2 | Fig 1 | Fig 2 | Fig 3 | Fig 4 | Fig 5 | Fig 6 | Fig 7 | Fig 8 | Fig 9 | Fig 10 | Fig 11 | Fig 12 | Fig 13 | Carnegie No.71 | Historic Disclaimer
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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

Finley EB. The development of the subcutaneous vascular plexus in the head of the human embryo. (1923) Contributions to Embryology Carnegie Institution No. 71: 155-161.


Cite this page: Hill, M.A. (2024, April 23) Embryology Finley1923 Plate 2.jpg. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/File:Finley1923_Plate_2.jpg

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