All the fetus's nutrients and oxygen come from the mother's blood. During the fourth month of development, bone replaces cartilage in the fetus and it can begin to hear sounds. The rest of this section showed the development process at each stage of development. The final section, eight, describes the events preceding the birth and the birth itself. The fetus has formed all its organs and reaches its full size during the third trimester. In preparation for birth, fat is stored in the fetus's body and myelination begins. During the end of the third trimester the fetus is starved for fat that the placenta can no longer supply or satisfy the fetus's needs. The video shows and explains the birth of the Iruegas baby. This video showed the very essence of conception to the birth of a newborn baby. I believe this video can provide a new look to those who may not have actual knowledge of human development and the stages of what develops