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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
Etymology: L, fetus + placenta, flat cake
the portion of the placenta that is formed from the shaggy chorion frondosum, the villi of which invade the decidua basalis. Also called pars fetalis.
That part of the placenta formed by aggregation of chorionic villi in which the umbilical vein and arteries ramify.
See also: placenta