<P> In humans , implantation is the stage of pregnancy at which the already fertilized egg adheres to the wall of the uterus . At this stage of prenatal development , the conceptus is called a blastocyst . It is by this adhesion that the fetus receives oxygen and nutrients from the mother to be able to grow . </P>
<P> In humans , implantation is the stage of pregnancy at which the already fertilized egg adheres to the wall of the uterus . At this stage of prenatal development , the conceptus is called a blastocyst . It is by this adhesion that the fetus receives oxygen and nutrients from the mother to be able to grow . </P>
at the time of implantation the human embryo is called a
at the time of implantation the human embryo is called a
blastocyst
blastocyst