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m Iztwoz moved page Trilaminar blastocysttoTrilaminar embryonic disc: more usual name - in line with bilaminar embryonic disc
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{{Infobox embryology |
{{Infobox embryology |
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| Name = Trilaminar |
| Name = Trilaminar embryonic disc |
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| Latin = blastodiscus trilaminaris |
| Latin = blastodiscus trilaminaris |
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| Image = |
| Image = |
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| Caption2 = |
| Caption2 = |
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}} |
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A '''trilaminar embryonic disc''' |
A '''trilaminar embryonic disc''',<ref name="umich">{{cite web |title=Embryonic Period (Weeks 3-8) |url=https://www.med.umich.edu/lrc/coursepages/m1/embryology/embryo/05embryonicperiod.htm |website=www.med.umich.edu |access-date=11 June 2022}}</ref> '''trilaminary blastoderm''', or '''trilaminar germ disk''' is an early stage in the development of [[triploblastic]] organisms, which include humans and many other animals. It is the next stage from the earlier [[bilaminar embryonic disc]]. |
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It is an embryo which exists as three different [[germ layer]]s |
It is an embryo which exists as three different [[germ layer]]s – the [[ectoderm]], the [[mesoderm]] and the [[endoderm]]. These [[Laminar organization|layers are arranged]] on top of each other, giving rise to the name ''trilaminar'', or "three-layered". The mesoderm is segmented further into the paraxial, intermediate and the lateral plate mesoderm. |
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These three layers arise early in the third week ( |
These three layers arise early in the third week (during [[gastrulation]]) from the [[epiblast]] (a portion of the mammalian [[inner cell mass]]). |
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==References== |
==References== |
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==External links== |
==External links== |
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* {{EmbryologySwiss|hdisqueembry/triderm01}} |
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* {{EmbryologyUNSW|Notes/week3_4}} |
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* [http://staff.um.edu.mt/acus1/Gasrtrulation.htm Overview at edu.mt] |
* [http://staff.um.edu.mt/acus1/Gasrtrulation.htm Overview at edu.mt] |
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| Trilaminar embryonic disc | |
|---|---|
| Details | |
| Identifiers | |
| Latin | blastodiscus trilaminaris |
| TE | embryonic disc_by_E6.0.1.1.4.0.1 E6.0.1.1.4.0.1 |
| Anatomical terminology | |
Atrilaminar embryonic disc,[1] trilaminary blastoderm, or trilaminar germ disk is an early stage in the development of triploblastic organisms, which include humans and many other animals. It is the next stage from the earlier bilaminar embryonic disc.
It is an embryo which exists as three different germ layers – the ectoderm, the mesoderm and the endoderm. These layers are arranged on top of each other, giving rise to the name trilaminar, or "three-layered". The mesoderm is segmented further into the paraxial, intermediate and the lateral plate mesoderm.
These three layers arise early in the third week (during gastrulation) from the epiblast (a portion of the mammalian inner cell mass).
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Human embryonic development in the first three weeks
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| Week 1 |
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| Week 2 (Bilaminar) |
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| Week 3 (Trilaminar) |
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