2 ﹒会阴横韧带transverse ligament of perineum 3 ﹒尿生殖膈上筋膜superior fascia of urogenital diaphragm 4 ﹒会阴深横肌deep transverse muscle of perineum.5 .尿生殖膈下筋膜Inferinr faecfa of mrogepital diaobrgrm. ......