The Federal Aviation Agency's name changed to the Federal Aviation Administration as it became one of several agencies (e.g., Federal Highway Administration, Federal Railroad Administration, the Coast Guard, and the Saint Lawrence Seaway Commission) within DOT (albeit the largest).
The endometrium is the tissue lining the inner cavity of the uterus (or womb). The uterus, a hollow organ about the size and shape of a pear, is found in a woman's pelvic region and is the organ where the fetus grows until birth. The upper part of the uterus is called the corpus; the lower, narrower part of the uterus is called the cervix. The cervix is the opening between the uterus and the vagina. The outer layer of the uterus is called the myometrium. The myometrium is thick and composed of strong muscles.
Effacement means that the cervix stretches and gets thinner. Dilatation means that the cervix opens. As labor nears, the cervix may begin to thin or stretch (efface) and open (dilate) to prepare for the passage of the baby through the birth canal (vagina).How fast the cervix thins and opens varies from woman to woman. In some women, the cervix may start to efface and dilate slowly over a period of weeks.A first-time mother often will not dilate until active labor begins. Late in your pregnancy, your health professional may manually check (wearing sterile gloves) how much your cervix has effaced and dilated.During labor, contractions in your uterus open (dilate) your cervix and help move the baby into position to be born.ate in your pregnancy, your health professional may manually check (wearing sterile gloves) how much your cervix has effaced and dilated. During labor, contractions in your uterus open (dilate) your cervix and help move the baby into position to be born.