合胞體滋胚層
The syncytiotrophoblast (from the Greek 'syn'- "together"; 'cytio'- "of cells"; 'tropho'- "nutrition"; 'blast'- "bud") is the epithelial covering of the highly vascular embryonic placental villi, which invades the wall of the uterus to establish nutrient circulation between the embryo and the mother. It is a multinucleate, terminally differentiated syncytium, extending to 13cm.
Key facts
- Embryology.Name
- Syncytiotrophoblast
- Embryology.Latin
- syncitiotrophoblastus
- Embryology.Image
- Gray36.png
- Embryology.Caption
- Primary chorionic villi. Diagrammatic.
- Embryology.Image2
- Gray37.png
- Embryology.Caption2
- Secondary chorionic villi. Diagrammatic.
- Embryology.CarnegieStage
- 5a
- Embryology.Days
- 8
via Wikipedia infobox
Article · 中文
合胞體滋養層屬於存在於胚胎胎盤中的細胞。 合胞體滋養層屬於滋胚層的外層合胞體層，具有積極侵入子宮內膜的特性。 合胞體滋養層形成胎盤最外層的胎兒組成物，表面積會急速增大，極大的表面積有助於在母體與胎兒之間交換。 合胞體滋養層會分泌黃體素以及人類絨毛膜促性腺激素(HCG)、(HPL)；人類絨毛膜促性腺激素可以防止黃體的退化。黃體素則可以保持子宮內膜的完整，直到合胞體滋養層成熟到可以分泌黃體素，維持妊娠的狀態(大約到了四個月的胚胎才足以維持)。合胞體滋養層藉由黃體認其蛻膜的幫助才得以發育。
Abstract from DBpedia / Wikipedia · CC BY-SA