Implantation
The attachment of the embryo to the lining of the uterus
Pregnancy
The time the baby spends developing in the uterus
Amniotic fluid
Protects the embryo
Amnion
Holds amniotic fluid in place
Umbilical cord
Carries blood from embryo to the placenta and back
Placenta
Carries food and oxygen from the mother to the embryo
What happens after childbirth
The remains of the placenta and umbilical cord pass out
Methods used to prevent implantation
The morning after pill
The morning after pill