Cytotrophoblast
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2008-01-15T00:10:19Z
Bobjgalindo
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[[es:Citotrofoblasto]]
{{Infobox Embryology |
Name = {{PAGENAME}} |
Latin = |
GraySubject = 6 |
GrayPage = 47 |
Image = Gray36.png |
Caption = Primary chorionic villi. Diagrammatic. |
Image2 = Gray37.png |
Caption2 = Secondary chorionic villi. Diagrammatic. |
System = |
CarnegieStage = 5a |
Days = 8 |
Precursor = |
GivesRiseTo = |
MeshName = Trophoblasts |
MeshNumber = A16.254.085.162 |
DorlandsPre = c_73 |
DorlandsSuf = 12278820 |
}}
The '''cytotrophoblast''' (or '''layer of Langhans''') is the inner layer of the [[trophoblast]], interior to the [[syncytiotrophoblast]] in an embryo. It serves to anchor the embryonic [[chorion]] to the maternal [[endometrium]].
Cytotrophoblasts are stem cells in the [[chorionic villi]]. During differentiation, mononuclear cytotrophoblast fuse together into the multinucleated syncytiotrophoblasts.
==Invading cytotrophoblasts==
These cells invade maternal uterine tissues and thus are in direct contact with maternal stroma and immune cells.
==Additional images==
<gallery>
Image:Gray12.png|Section through embryonic area of Vespertilio murinus to show the formation of the amniotic cavity.
</gallery>
==External links==
* {{BUHistology|19908loa}} - "Female Reproductive System: placental villi"
* [http://sprojects.mmi.mcgill.ca/embryology/earlydev/week1/cyto-syncytio.html Diagram at McGill]
{{developmental-biology-stub}}
{{Embryology}}[[Category:Embryology]]
[[es:Citotrofoblasto]]
[[lt:Citotrofoblastai]]