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EMBRYONIC DEVELOPMENT & STEM CELL COMPENDIUM
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All Anatomical Compartments > Compartment Card
Placenta >

Chorion Frondosum


Plc.ChrF
The chorion frondosum (literally "bushy chorion") arises from the polar pole of the human embryo trophoblast. It consists of a layer of trophblasts and extraembryonic mesoderm surrounded by numerous villi. This portion of the placenta is located at the site of implantation.

Equivalent to the mouse ectoplacental cone.
Ectoplacental Cone, Main Villous Placenta
Polar Trophectoderm
Chorion Frondosum
Multiple Ancestors Single Ancestor No Descendants Develops from Part of Parent