[概述]4.3 Perineum 、amp; External Genitalia 会阴与外生殖器

Three bones that form the os coxae : ilium , ischium , pubis .Lesser sciatic notch坐骨小切迹the notch located between the ischial tuberosity and the ischial spine the lesser sciatic notch is converted to the lesser sciatic foramen by the sacrospinous ligament ......