title: In utero behavior of human embryos at the spinal-cord stage of development.
abstract: The movement of human embryos was observed in detail by ultrasonography, and body parts and types of movements were classified in anatomic terms and analyzed in relation to embryonal growth. The development of embryonic movement was also considered in connection with the neurological and locomotor differentiation.
authors.affiliation: Natsuyama Hospital, Kyoto, Japan.
authors.forename: E
authors.initials: E
authors.lastname: Natsuyama
mesh_terms: D001519:Behavior; D005260:Female; D005333:Fetus / Q000502:physiology*; D005865:Gestational Age; D006801:Humans; D009043:Motor Activity; D009068:Movement; D011247:Pregnancy; D013116:Spinal Cord / Q000196:embryology* / Q000502:physiology; D014463:Ultrasonography