方法：在30侧成年男性尸体标本上对精索腹股沟管腹环至皮下环段进行了解部学观测。
Methods : Spermatic cord from the inguinal ring to the extermal ring was dissected and measured on 30 adult male cadaver specimens .
方法用离体血管灌流法灌流大鼠腹主动脉环，测定血管环张力的变化。
Methods Isolated aortic ring was perfused and the tension of the vessel was measured .
腹环