Trophoblast (Cytotrophoblast, Syncytiotrophoblast)
Blastocoele · Yolk sack/exocoelomic cavity · Heuser's membrane · Extraembryonic coelom · Vitelline duct
Umbilical cord (Umbilical artery, Umbilical vein, Wharton's jelly) · Allantois
Placenta · Decidua (Decidual cells) · Chorionic villi/Intervillous space · Gestational sac (Amnion/Amniotic sac/Amniotic cavity, Chorion)