Syncytiotrophoblast

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Syncytiotrophoblast
Primary chorionic villi. Diagrammatic.
Secondary chorionic villi. Diagrammatic.
Gray's subject #6 47
MeSH Syncytiotrophoblasts
Dorlands/Elsevier s_32/12777200

Syncytiotrophoblasts are cells found in the placenta of human embryos.

They are the outer syncytial layer of the trophoblasts and actively invade the uterine wall.

They form the outermost fetal component of the placenta (also known as syntrophoblast) and massively increase the surface area available for nutrient exchange between the mother and the fetus.

Cells from the syncytiotrophoblast secrete human chorionic gonadotropin.

[edit] Additional images

Section through embryonic area of Vespertilio murinus to show the formation of the amniotic cavity.

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