The Smith County Veteran Services Office will be closed Monday through Monday, August 15-22, 2016. The Smith County Veterans Service Office will be closed Monday through Monday, August 15-22 for training, and will reopen on Tuesday, August 23 for normal business hours.
The first differentiation event in the formation of the placenta is the formation of trophoblasts, specialized epithelial cells, that ultimately form a physical connection between the embryo and the uterus. Allocation of cells to the trophoblast lineage is dependent on their position at the morula stage.
The placenta is formed from some of these rapidly dividing cells. The placenta functions as a life-support system during. pregnancy. Oxygen, nutrients, and hormones from the mother are transferred across the placenta to reach the baby, and. waste products from the baby are transferred to the mother for removal.