BGDA Practical 3 - Gastrulation: Difference between revisions
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| [[File:Trilaminar_embryo.jpg]] | | [[File:Trilaminar_embryo.jpg]] | ||
| Scanning electron micrograph showing the early forming 3 layers: ectoderm, mesoderm and endoderm. | | Scanning electron micrograph showing the early forming 3 layers: ectoderm, mesoderm and endoderm. The embryonic disc has been broken to expose these early layers that form the entire embryo. | ||
# [[Ectoderm]] - columnar epithelium | |||
# [[Mesoderm]] - embryonic connective tissue (mesenchyme) | |||
# [[Endoderm]] - cuboidal epithelium | |||
* The amniotic cavity would lie above the ectoderm layer. | |||
* The yolk sac would initially lie below the endoderm layer, later this would be the gastrointestinal tract within the embryo. | |||
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Revision as of 09:21, 13 May 2013
Practical 3: Oogenesis and Ovulation | Gametogenesis | Fertilization | Early Cell Division | Week 1 | Implantation | Week 2 | Extraembryonic Spaces | Gastrulation | Notochord | Week 3 |
Introduction
Stage 7
Gastrulation
Carnegie Stage 7 and 8, gastrulation, migration of cells through the primitive streak to form endoderm and mesodermal layers of embryo.
Scanning electron micrograph showing the early forming 3 layers: ectoderm, mesoderm and endoderm. The embryonic disc has been broken to expose these early layers that form the entire embryo.
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<mediaplayer width='390' height='500' image="http://embryology.med.unsw.edu.au/embryology/images/b/b9/Mesoderm_001_icon.jpg">File:Mesoderm_001.mp4</mediaplayer> |
Now observe this brief animation of mesoderm development during week 3. Mesoderm Development
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Practical 3: Oogenesis and Ovulation | Gametogenesis | Fertilization | Early Cell Division | Week 1 | Implantation | Week 2 | Extraembryonic Spaces | Gastrulation | Notochord | Week 3 |
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Cite this page: Hill, M.A. (2024, April 20) Embryology BGDA Practical 3 - Gastrulation. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/BGDA_Practical_3_-_Gastrulation
- © Dr Mark Hill 2024, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G