Membrane,Fetal
《英文msh詞典》Membrane,Fetal
[入口詞] Membrane,Fetal
[主題詞] Fetal Membranes
[英文釋義] Thin layers of tissue which surround the embryo or fetus and provide for its nutrition,respiration,excretion and protection; they are the yolk sac,allantois,amnion,and chorion.