Plains All American Pipeline, L.P. (Plains) is engaged in the transportation, storage, terminalling and marketing of crude oil and refined products, as well as in the processing, transportation, fractionation, storage and marketing of natural gas liquids (NGL).
The first stage of labor is the longest and involves three phases: 1  Early Labor Phase âThe time of the onset of labor until the cervix is dilated to 3 cm. 2  Active Labor Phase â Continues from 3 cm. until the cervix is dilated to 7 cm.  Transition Phase â Continues from 7 cm. until the cervix is fully dilated to 10 cm.
After the cervix begins to efface, it will also begin to open (cervical dilatation). Cervical dilatation is expressed in centimeters from 0 to 10. Zero means that the cervix is closed, and 10 means that it is completely dilated. Your cervix must be completely dilated before you can begin the pushing stage.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.