Birth stage three, which begins after the birth of the baby, further contractions expel the placenta, amniotic sac, and the remaining portion of the umbilical cord usually within a few minutes. Enormous changes take place in the newborn's circulation to enable breathing in air. In the uterus, the unborn baby is dependent on circulation of blood through the placenta for sustenance including gaseous exchange and the unborn baby's blood bypasses the lungs by flowing through the foramen ovale, which is a hole in the septum dividing the right atrium and left atrium. After birth the umbilical cord is clamped and cut,
Jewish women in the Holocaust and emotionally. Once labor was over and the baby was born, the women vulnerable to being killed along with their baby. One memoir describes some of the sadistic acts, which were performed among those who were pregnant: "SS men and women amuse themselves by beating pregnant women with clubs and whips, [being] torn by dogs, dragged around by the hair and kicked in the stomach with heavy German boots. Then when [the pregnant Jewish women] collapsed, they were thrown into the crematory-alive." Several Jewish women who wrote their own memoirs reflecting on the Holocaust reported there being a double jeopardy