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Early development of the frog embryo

(Top) Development of the axial central nervous system.

(Bottom) Development of the external gills and operculum.

No. 13. Early neurula. Dorsal

No. 14. Neural fold stage.

No. 15. Closing neural fold view Medullary plate stage Dorsal view. Dorsal view.

No. 16. Early tail bud. Dorsal view.

No, 17. Earliest musculor response. Lateral view.

Stage 20, 6mm I40hrs Gill circulation and hatching. External gills

Stage 25 11 mm 284hrs External gills Spiracie absorbed. Left side to show opercular fold and spiracle.


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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)
Frog Development (1951): 1 Introduction | 2 Rana pipiens | 3 Reproductive System | 4 Fertilization | 5 Cleavage | 6 Blastulation | 7 Gastrulation | 8 Neurulation | 9 Early Embryo Changes | 10 Later Embryo or Larva | 11 Ectodermal Derivatives | 12 Endodermal Derivatives | 13 Mesodermal Derivatives | 14 Summary of Organ Appearance | 15 Glossary | 16 Bibliography | Figures

Reference

Rugh R. Book - The Frog Its Reproduction and Development. (1951) The Blakiston Company.

Cite this page: Hill, M.A. (2024, April 27) Embryology Rugh 007.jpg. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/File:Rugh_007.jpg

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© Dr Mark Hill 2024, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G

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current14:48, 6 April 2013Thumbnail for version as of 14:48, 6 April 2013965 × 1,200 (220 KB)Z8600021 (talk | contribs)==Early development of the frog embryo== (Top) Development of the axial central nervous system. (Bottom) Development of the external gills and operculum. No. 13. Early neurula. Dorsal No. 14. Neural fold stage. No. 15. Closing neural fold view ...

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