|
For the
first eight weeks of its life, the fertilized egg is called the "embryo." The
embryo develops from an egg fertilized by the sperm. It begins as one cell,
which divides into two cells by the times it descends from the fallopian tube
into the uterus. These cells divide further until they form two groups - one
making up the wall lining of the embryo to become the "placenta" and the second
becoming the embryo itself.
|