1
.
| Periosteum overlying coccyx |
2
.
| Anococcygeal ligament |
3
.
| Middle cluneal nerves |
4
.
| Gluteus maximus muscle |
5
.
| Ischiorectal fossa (pointer indicates inferior fascia of pelvic diaphragm) |
6
.
| Inferior rectal nerves |
7
.
| Lunate fascia |
8
.
| Upper pointer: Anus Lower pointer: External anal sphincter muscle |
9
.
| posterior perineal branches femoral cutaneous nerve |
10
.
| Fascia lata |
11
.
| Ischiorectal fossa (pointer indicates posterior recess deep to sacrotuberous ligament) |
12
.
| Branch of inferior rectal artery |
13
.
| Fibrous tissue superficial to tuber ischiadicum |
14
.
| Branches of transverse perineal artery (passing parallel to posterior border of urogenital triangle) |
15
.
| Branches of posterior scrotal nerves |
16
.
| Supeficial perineal fascia (Colles' fascia) covering bulb of penis |