Labour Delivery Model
The orifice of cervix has expanded 5 cm bigger and the cervical tunnels disapper absolutely. The orifice of cervix has no expanding and the cervical tunnels haven’t disappeared at all. The positional relation between the head of fetus and the square of ischial spine is -5.
The orifice of cervix has expanded 4cm bigger and the cervical tunnels disapper absolutely. The positional relations between the head of fetus and the square of ischail spine is -3.