The sperm and ovum unite through fertilization, creating a conceptus that over the course of 8–9 days will implant in the uterine wall, where it will reside over the nine-month course of gestation. In humans<unk> is the stage in the development of the body in which the blastocyst hatches as the embryo, and adheres to the wall of the uterus, as the conceptus. Once this adhesion is successful, the female is considered to be pregnant and the embryo will receive oxygen and nutrients from the mother in order to grow.<unk> of a fertilized ovum usually takes place around nine days after ovulation but can range between six and twelve days.
Implantation 
Replantation
Autotransplantation
Allotransplantation
Hand transplantation
Xenotransplantation
Face transplant
Implant 