分娩 Birth
分娩与助产 Labor and Delivery
插图：宫颈扩张 Illustration: Dilation of the cervix
宫颈扩张（实际尺寸）Dilation of the cervix (actual sizes)
左：开始分娩时。右：第一产程终止时 Left: Beginning of labor. Right: End of the first stage of labor.
[Course 2] [Description] [How to use it] [Introduction] [Conception] [Pregnancy] [Birth] [Historical Notes] [Modern Childbirth] [Labor and Delivery] [After Delivery] [Lactation] [Sexual Intercourse] [Infertility] [Contraception] [Abortion] [Additional Reading] [Examination]
