Development of the membranous septum in the human heart.
D000818:Animals; D002685:Chiroptera; D005260:Female; D005333:Fetus / Q000033:anatomy & histology; D006346:Heart Septum / Q000196:embryology / Q000254:growth & development*; D006801:Humans; D007231:Infant, Newborn; D011247:Pregnancy