1
.
| Iliococcygeus muscle |
2
.
| Pubococcygeus muscle |
3
.
| Puborectalis muscle (1-3 are parts of the levator ani muscle) |
4
.
| Superior fascia of urogenital diaphragm |
5
.
| Upper pointer: Internal pudendal artery (cutoff) Lower pointer: Pudendal nerve (cut off) |
6
.
| Urethra (opened) |
7
.
| Bulb of penis (dissected) |
8
.
| Bulbospongiosus muscle (cut along midline) |
9
.
| Coccyx (terminal segment) |
10
.
| Perineal branch of sacral nerve IV |
11
.
| Anococcygeal ligament |
12
.
| Branch of inferior rectal nerve (cut off) |
13
.
| Area of insertion of Levator ani muscle into wall of anal canal |
14
.
| Deep part |
15
.
| Superficial part |
16
.
| Subcutaneous part (14-16 refer to the external anal sphincter muscle) |