The chorion.
The chorion is the outermost fetal membrane. It is formed by the fusion of the extraembryonic mesoderm with the inner surface of the trophoblasts. Its function is to aide in the production of the placenta.
chorion
Its a placentation abnormality .Placenta got a fetal site .Fetal site which has a central depression is circumvallate placenta
The placenta is completely formed by 10 weeks, by the joining of the decidua basalis (maternal side) and chorionic villi (fetal side). The chorion and amnion are the placental membranes. The Chorion is the membrane furthest from the embryo, and the amnion in the inner layer that is closest to the embryo.
Placenta
Fetal surface.
umbilical arteries
The fetal membrane layers are the Chorion, Amnion, Yolk sac, and Mesenchymal layer.
It is episitomy
The name of the membrane that covers the organs of the abdomen in a fetal pig is the peritoneum membrane.
The name of the membrane that covers the organs of the abdomen in a fetal pig is the peritoneum membrane.
As in most mammals, the fetal pig will form within the placenta in the uterus of the mother.