Systems of life No 113. Setting up the systems. 13.
D003964:Diaphragm / Q000196:embryology; D004622:Embryo, Mammalian / Q000502:physiology*; D005333:Fetus / Q000502:physiology*; D005865:Gestational Age; D006801:Humans; D012137:Respiratory System / Q000196:embryology