total placental previa. dangerous placenta location during pregnancy. medical pathology. detailed medical diagram with

total previa woman mother prenatal womb female uterus foetus pregnancy placental anatomy child front locations growth gynecology diagram cord ultrasound umbilical newborn medicine birth development normal delivery praevia human baby placenta illustration vector fetus pregnant reproduction vagina entanglement head obstetrics fetal presentation embryo medical pelvic gestation childbirth birthday maternity motherhood infant body marginal partial