has part has part characteristic of part of has modifier Abnormalities of placenta or umbilical cord Abnormality of the female genitalia Abnormal placenta morphology The placenta is a fetomaternal organ. The fetal portion of the placenta is the villous chorion and the maternal portion is the decidua basalis. The two portions are connected by anchoring villi that are anchored to the decidua basalis by the cytotrophoblastic shell. quality abnormal placenta