1. Bulbospongiosus
2. Ischiocavernosus
3. Anal sphincter
4. Deep Transverse Perineal
5. Superficial Transverse Perineal
6. Levator Ani
7. Obturator Internus
8. Perineal body (central anchor point)
9. Ano-coccygeal body (anchors anal sphincters and Levator Ani muscles to coccyx)
10. Sacrum and coccyx (tail bone)
11. Ischial tuberosity (the bones you sit on)
12. Sacro tuberous ligament