File:BaxterBoyd1939-plate01.jpg

From Embryology

Original file(1,680 × 2,400 pixels, file size: 786 KB, MIME type: image/jpeg)

Plate I. Ten-Somite Human Embryo

Fig. 1. Reconstruction of the future brain region of the embryo viewed from above and behind. In order better to show the dark masses of neural crest material against the background they have been outlined with white dots. The asymmetry of the neural folds and the corresponding asymmetry of the cristae neuralis rostralis is to be noted. The form of the crista neuralis acoustico-facialis is well seen.

Fig. 2. The same reconstruction viewed from in front; the neural crest primordia are again outlined with a white dotted line. The crista neuralis acoustico-facialis in this view overlaps somewhat the crista neuralis post-otica, but the boundary between the two is indicated.

Fig. 3. Microphotograph of a section through the cranial part of the acoustico-facial primordium of the embryo ( x 250). The single mass of cells of this primordium lying dorsal to the neural tube and fused with it in the midline is to be noted. There is no apparent connexion between this primordium and the overlying somatic ectoderm.

Fig. 4. Microphotograph of a section at the level of the eighth somite ( x 500). Here there are no neural crest cells in the re-entrant angle between the neural and somatic ectoderm. The neural folds at this level are quite separate.


Online Editor - 10 somite embryo corresponds to Carnegie stage 10 in Week 4.


Stage 10 Links: Week 4 | Gastrulation | Lecture | Practical | Image Gallery | Carnegie Embryos | Embryos | Category:Carnegie Stage 10 | Next Stage 11
  Historic Papers: 1910 | 1917 | 1926 | 1939 | 1943 | 1957 | 1985


Week: 1 2 3 4 5 6 7 8
Carnegie stage: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23


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)
Links: Text-fig 1 | Text-fig 2 | Plate 1 | Fig 1 | Fig 2 | Fig 3 | Fig 4 | Plate 2 | Fig 5 | Fig 6 | Fig 7 | Baxter and Boyd 1939 | Historic Embryology Papers | Neural Crest Development | Carnegie stage 10

Reference

Baxter JS. and Boyd JD. Observations on the neural crest of a ten-somite human embryo. (1939) J Anat. 73: 318–326. PMID 17104759


Cite this page: Hill, M.A. (2024, February 29) Embryology BaxterBoyd1939-plate01.jpg. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/File:BaxterBoyd1939-plate01.jpg

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.

Date/TimeThumbnailDimensionsUserComment
current23:08, 16 September 2015Thumbnail for version as of 23:08, 16 September 20151,680 × 2,400 (786 KB)Z8600021 (talk | contribs){{BaxterBoyd1939 figures}}

Metadata