Bi-directional peristaltic conductivity of the alimentary tract in the earliest fetal stage.
D000818:Animals; D002415:Cats; D005769:Gastrointestinal Motility; D005865:Gestational Age; D006801:Humans; D007422:Intestines / Q000196:embryology* / Q000502:physiology; D009119:Muscle Contraction; D009130:Muscle, Smooth / Q000196:embryology / Q000502:physiology; D010528:Peristalsis