develops from develops from extraembryonic cell trophoblast cell An extraembryonic cell that develops from a trophectodermal cell. This cell is found in the outer layer of the blastocyst and can invade other structures in the uterus once the blastocyst implants into the uterine wall. A trophoblast cell is involved in the implantation of the embryo into the uterine wall, placental formation, remodelling of maternal vasculature in the uterus, nutrient and gas exchange, hormone production, and immune modulation to support fetal development. https://cellxgene.cziscience.com/cellguide/CL_0000351 FMA:83028 trophoblastic cell trophectodermal cell