Cytotrophoblast
From Wikipedia, the free encyclopedia
| Cytotrophoblast | ||
|---|---|---|
 |
||
| Primary chorionic villi. Diagrammatic. | ||
 |
||
| Secondary chorionic villi. Diagrammatic. | ||
| Gray's | subject #6 47 | |
| MeSH | Trophoblasts | |
The cytotrophoblast (or layer of Langhans) is the inner layer of the trophoblast, interior to the syncytiotrophoblast.
Cytotrophoblasts are stem cells in the chorionic villous. During differentiation, mononuclear cytotrophoblast fuse together into the multinucleated syncytiotrophoblasts.
[edit] Invading cytotrophoblasts
These cells invade maternal uterine tissues and thus are in direct contact with maternal stroma and immune cells.
[edit] Additional images
 Section through embryonic area of Vespertilio murinus to show the formation of the amniotic cavity. |
[edit] External links
- Histology at BU 19908loa - "Female Reproductive System: placental villi"
- Diagram at McGill
 |
This developmental biology article is a stub. You can help Wikipedia by expanding it. |
| Mammalian development of embryo and development of fetus (some dates are approximate - see Carnegie stages) |
|---|
| Week 1: Zygote - Morula - Blastula/Blastomere/Blastosphere - Archenteron/Primitive streak - Blastopore - Allantois - Trophoblast (Cytotrophoblast - Syncytiotrophoblast - Gestational sac)
Week 2: Yolk sac - Vitelline duct - Bilaminar disc Week 3: Hensen's node - Gastrula/Gastrulation - Trilaminar embryo Branchial arch (1st) - Branchial pouch - Meckel's cartilage - Somite/Somitomere - Sclerotome - Myotome - Germ layer (Ectoderm, Endoderm, Mesoderm, Chordamesoderm, Paraxial mesoderm, Intermediate mesoderm, Lateral plate mesoderm, Splanchnopleure, Somatopleure) Histogenesis and Organogenesis Uterine support: Placenta - Umbilical cord (Umbilical artery, Umbilical vein, Wharton's jelly) - Amniotic sac (Amnion, Chorion) |
