The chorionic villi that initially developed in the paraplacental areas (i.e. the areas between the cotyledons) soon disappear. However, the epithelium in these areas continues to absorb ____ that accumulates between the ____ and ____. The uterine glands between the ____ are well developed and secrete large volumes. These secretions are augmented by uterine ____ epithelium, which appears to be sloughed and replaced at regular intervals.