(embryology) The inner, cellular layer of a trophoblast, covering the chorion and the chorionic villi during the first half of pregnancy.
| Sci-Tech Dictionary: cytotrophoblast |
(embryology) The inner, cellular layer of a trophoblast, covering the chorion and the chorionic villi during the first half of pregnancy.
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| Veterinary Dictionary: cytotrophoblast |
The cellular (inner) layer of the trophoblast.
| Wikipedia: Cytotrophoblast |
| Cytotrophoblast | |
|---|---|
| Primary chorionic villi. Diagrammatic. | |
| Secondary chorionic villi. Diagrammatic. | |
| Gray's | subject #6 47 |
| Carnegie stage | 5a |
| Days | 8 |
| MeSH | Trophoblasts |
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.
The primary villi has only the cytotrophoblast as an axe.
These cells invade maternal uterine tissues and thus are in direct contact with maternal stroma and immune cells.
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| trophoblast | |
| Langerhans cell (histology) | |
| Heuser's membrane |
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