Definition that contains fetal membrane
- afterbirth the placenta and fetal membranes that are expelled from the uterus after the baby is born
- chorioallantois the very vascular fetal membrane composed of the fused chorion and adjacent wall of the allantois
- chorioallantoic membrane the very vascular fetal membrane composed of the fused chorion and adjacent wall of the allantois
- allantois the vascular fetal membrane that lies below the chorion and develops from the hindgut in many embryonic higher vertebrates (reptiles, birds and mammals)