Syncytiotrofoblast

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A graph showing the construction of primary placenta villi, syncytiotrophoblast was identified

Syncytiotrophoblasts are multicentre cells of the placenta. In a man appear 7 days after fertilization. Syncytiotrophoblasts are the outer part of the trophoblast and have the ability to invade the uterus. Syncytiotrophoblasts are the most extensively located fetal component of the placenta (syntrofoblast) and significantly increase the surface area of ​​nutrient exchange between the mother and the fetus. Syncytiotrophoblasts secrete progesterone and chorionic gonadotropin. hCG prevents yellow body invasion. As long as the syncytiotrophoblasts do not secrete enough progesterone (about 4 months), the rest of the hormone required provides the pregnant corpus luteum.

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