It starts with the pregnancy from the first day of the last menstrual period of about two weeks after fertilization. The eggs are then mixed (Fertilized egg) is moving slowly. Through the fallopian tube to the uterus. And adhesive Embedded into the lining of the uterus. This baby will be smaller than a grain of rice. It began with a nodule protruding like hands and feet. The creation of the umbilical cord and amniotic sac enveloping. The cells within the tissues of two floors and a third class respectively. The cells will develop into a first-class brain, nervous system, skin, eyes, and ears to the floor later to develop into the lungs, stomach, and the third floor will become the heart, blood vessels, muscles and bones.