oligohydramnios, deficiency of amniotic fluid. parts of pregnancy are marked with line

around baby belly birth birthday cable care child childbirth childhood clamp complication cord deficiency embryo entanglement fetal fetus foetus gestation gynecology head healthcare human maternity medicine navel new newborn obstetrics oligohydramnios placenta pregnancy pregnant prenatal science travail ultrasound umbilic umbilical uterus womb