Katherine WolfAH134Pregnancy DisordersWeek 10Placenta PreviaThe placenta is a structure that develops in the uterus during pregnancy. It nourishes the developing fetus while growing in the mother's uterus.Placenta Previa is when the placenta lies low in the uterus and may partially or completely cover the cervix. The placenta will then separate from the uterine wall and the cervix may start to dilate.There are three types of Placenta Previa.Total Placenta Previa which is when the placenta completely covers the cervix.Partial Placenta Previa is when the placenta is partly over the cervix.Marginal Placenta Previa is when the placenta is near the edge of the cervix.The signs and symptoms and risks to the mother are vaginal bleeding inside the mother after the 20thweek of gestation. Usually, bleeding is painless but can be associated with uterine contractions and abdominal pain. During labor and birth, bleeding can be severe if not treated.