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 develops in a womanâs uterus during pregnancy. This sac-like structure provides the developing baby with food and oxygen. It also removes waste products from the babyâs blood. The placenta is also referred to as âafterbirth,â for it exits the body after the baby is born.