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fe·tal pla·cen·ta, placenta fetalis
the chorionic portion of the placenta, containing the fetal blood vessels, from which the umbilical cord develops; specifically, in humans, it develops from the villous chorion.
Synonym(s): pars fetalis placentae
That part of the placenta formed by aggregation of chorionic villi in which the umbilical vein and arteries ramify.
See also: placenta