|
mesoderm variations
|
added ref
|
||
| Line 1: | Line 1: | ||
{{Infobox embryology |
{{Infobox embryology |
||
| Name = Trilaminar blastocyst |
| Name = Trilaminar blastocyst |
||
| Latin = |
| Latin = blastodiscus trilaminaris |
||
| Image = |
| Image = |
||
| Caption = |
| Caption = |
||
| Line 7: | Line 7: | ||
| Caption2 = |
| Caption2 = |
||
}} |
}} |
||
A '''trilaminar |
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> (or '''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 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 like a stack of paper, giving rise to the name ''trilaminar'', or "three-layered". The mesoderm is segmented further into the paraxial, intermediate and the lateral plate mesoderm. |
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 like a stack of paper, 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 (after [[gastrulation]]) from the [[epiblast]] (a portion of the mammalian [[inner cell mass]]). |
These three layers arise early in the third week (after [[gastrulation]]) from the [[epiblast]] (a portion of the mammalian [[inner cell mass]]). |
||
==References== |
|||
{{Reflist}} |
|||
==External links== |
==External links== |
||
| Trilaminar blastocyst | |
|---|---|
| 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] (ortrilaminary blastoderm, or trilaminar germ disk) is an early stage in the development of triploblastic organisms, which include humans and many other animals.
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 like a stack of paper, 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 (after gastrulation) from the epiblast (a portion of the mammalian inner cell mass).
|
Human embryonic development in the first three weeks
| |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Week 1 |
| ||||||||
| Week 2 (Bilaminar) |
| ||||||||
| Week 3 (Trilaminar) |
| ||||||||
 | This developmental biology article is a stub. You can help Wikipedia by expanding it. |
