Tension: the basis of umbilical cord growth.
D000818:Animals; D005260:Female; D005315:Fetal Diseases / Q000150:complications; D005333:Fetus / Q000502:physiology; D006128:Growth; D006801:Humans; D009068:Movement; D011247:Pregnancy; D051381:Rats; D014470:Umbilical Cord / Q000473:pathology / Q000502:physiology*