The baby's head is rotated so that the occipital bone (back of the head) is toward the front of the mother; most common and beneficial presentation.
Amniotic sac; the membranes that surround the baby and the water in the uterus - amnion is the inner layer (next to baby), chorion is the outer layer.
Vagina
Unit of length, about half a penny; used to measure the dilation of the cervix
Opening; the act of opening the cervix to approximately 10 cm (4 inches) or fully open
Thinning; the act of thinning the cervix, expressed as a percentage.
The normal period in many labors when dilation is not increasing, but uterine activity continues. Often ends in rapid, complete dilation
Procedures encountered when arriving at the hospital or birth center; may include taking blood pressure, blood and urine samples, history, EFM strip, a vaginal exam, and changing clothes.
Passage of blood-tinged mucus or a small amount of blood prior to the onset of labor or in labor. This is not an indication of when labor may begin or when the baby will be born.