BGDB Gastrointestinal - Late Embryo: Difference between revisions
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| [[File:Stage22-GIT-icon.jpg| | | [[File:Stage22_bf2.jpg|300px]] | ||
| [[File:Stage22-GIT-icon.jpg|300px|link=Movie_-_Gastrointestinal_Tract_3D_stage_22]] | |||
[[Movie_-_Gastrointestinal_Tract_3D_stage_22|Gastrointestinal]] | [[Movie_-_Gastrointestinal_Tract_3D_stage_22|Gastrointestinal]] | ||
| The individual serial slices have also been incorporated into a 3D model of this embryo. | | The individual serial slices have also been incorporated into a 3D model of this embryo. |
Revision as of 10:34, 15 April 2011
Practical 1: Trilaminar Embryo | Early Embryo | Late Embryo | Fetal | Postnatal | Abnormalities | Lecture | Quiz |
Week 8
We have now reached late embryonic development. Start by looking briefly the process of how the definitive GIT tube is formed and then at the overview of the Carnegie stage 22 embryo GIT from one end to the other.
Then work through the listed specific serial sections of the embryo identifying the GIT features. Alternatively step through the serial sections yourself identifying the tract, its associated mesentries, organs and spaces. Note you should also be comparing the GIT appearance with the earlier embryonic (13/14) Carnegie stage.
Observe: GIT tube has a different appearance at different levels; stomach, duodenum, midgut and hindgut midgut herniated at the umbilicus, lying outside the ventral body wall, connected by mesentry large liver lying directly under the diaphragm and occupying the entire ventral body cavity with organs "embedded" within it the developing pancreas lying in the loop between stomach and duodenum
The individual serial slices have also been incorporated into a 3D model of this embryo. |
Lumen Development
width=252px|height=460px|controller=true|autoplay=false</qt> |
This is a simplified animation showing how the gastrointestinal tract wall changes during the late embryonic period.
Week 8 - By the end of this week the GIT endoderm tube is a tube once more. Week 9 - (early fetal) the endoderm of this now hollow tube differentiates into the mucosal epithelium (endoderm).
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Practical 1: Trilaminar Embryo | Early Embryo | Late Embryo | Fetal | Postnatal | Abnormalities | Lecture | Quiz |
BGDB: Lecture - Gastrointestinal System | Practical - Gastrointestinal System | Lecture - Face and Ear | Practical - Face and Ear | Lecture - Endocrine | Lecture - Sexual Differentiation | Practical - Sexual Differentiation | Tutorial
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Cite this page: Hill, M.A. (2024, June 18) Embryology BGDB Gastrointestinal - Late Embryo. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/BGDB_Gastrointestinal_-_Late_Embryo
- © Dr Mark Hill 2024, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G