[Lumbar vertebrate as a supporting organ. 1. Embryologic study].
D002113:Calcification, Physiologic; D005260:Female; D005333:Fetus; D005865:Gestational Age; D006801:Humans; D008159:Lumbar Vertebrae / Q000033:anatomy & histology / Q000000981:diagnostic imaging / Q000196:embryology*; D010012:Osteogenesis; D011247:Pregnancy; D011859:Radiography