To reach a stage in labor when a large segment of the fetal scalp is visible at the vaginal orifice of a fetus or the head of a fetus.
A membranous fold of tissue that partly or completely occludes the external vaginal orifice.
To reach a stage in labor when a large segment of the fetal scalp is visible at the vaginal orifice of a fetus or the head of a fetus.
A membranous fold of tissue that partly or completely occludes the external vaginal orifice.