Started with a pregnancy from the first day of the last menstruation. About two weeks after fertilization. Eggs that are fertilized and then (Fertilized egg) will move slowly through the fallopian tubes and uterus came to grip the stick. Embedded into the endometrium This time the baby is small, equal will start with a small blister grain protrude like hands and feet. With the creation of the umbilical cord and amniotic fluid bag wrap. Cells within the tissue will have two extra layers and becomes the third-grade level, respectively. The first floor cells will develop into the brain. The nervous system, skin, eye, and ear. Class will develop into the lungs, stomach, and the third layer will become the heart, blood vessels, muscles, and bones.
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