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. | ||
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| width=400px|<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> | |||
| valign="top" |[[File:Mesoderm_001_icon.jpg|100px|right]] | |||
Now observe this brief animation of mesoderm development during week 3. | |||
'''Mesoderm Development''' | |||
* This animation shows the migration of mesoderm throughout the embryonic disc during gastrulation. | |||
* The pink arrow show how mesodermal cells spread out between the ectoderm and endoderm layers, forming the third (middle) layer of the '''trilaminar''' embryo. | |||
* '''Axial process''' - the arrow running from the '''primitive node''' upward is the axial process which will later form the '''notochord'''. | |||
* 2 regions where no mesoderm is found, at the upper and lower ends of the gastrointestinal tract. | |||
# cranial (top) - '''buccopharyngeal membrane''' | |||
# caudal (bottom) - '''cloacal membrane'''. | |||
* '''Prechordal plate''' - lies above the '''buccopharyngeal membrane''' and is the cardiogenic mesoderm, that will form the heart. | |||
:'''Links:''' [[Media:Mesoderm_001.mp4|MP4 version]] | [[Media:Mesoderm_001.mov|Quicktime version]] | [[Gastrulation]] | [[Mesoderm]] | [[Week 3]] | |||
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Revision as of 10:18, 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. |
<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
|
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, March 28) 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