| 1
.
| Superior gluteal artery |
| 2
.
| Sciatic nerve |
| 3
.
| Inferior gluteal artery |
| 4
.
| Piriform muscle (cut across) |
| 5
.
| Inferior gluteal nerve |
| 6
.
| Middle cluneal nerve (from dorsal branch of 2nd sacral nerve) |
| 7
.
| Coccyx (periosteum removed) |
| 8
.
| Sacrospinous ligament (coccygeus muscle fused with ligament, the latter rather indistinct) |
| 9
.
| Ischial spine |
| 10
.
| Coccyx (tip) |
| 11
.
| Levator ani muscle (pointer on pubococcygeal part of muscle) |
| 12
.
| Anococcygeal ligament |
| 13
.
| Deep part |
| 14
.
| Superficial part |
| 15
.
| Subcutaneous part (1315 refer to the external anal sphincter) |
| 16
.
| Anus |
| 17
.
| Longitudinal muscle of anal canal |
| 18
.
| Superior gluteal nerve |
| 19
.
| Left pointer: Lymph node Right pointer: Margin of greater sciatic notch |
| 20
.
| Ala of ilium |
| 21
.
| Origin of rectus femoris muscle |
| 22
.
| Acetabulum |
| 23
.
| Obturator nerve |
| 24
.
| Tendinous arch of levator ani muscle (indistinct, see discussion with 158-7) |
| 25
.
| Levator ani muscle (pointer on puborectalis muscle) |
| 26
.
| Body of pubic bone (partially removed) |
| 27
.
| Obturator fascia |
| 28
.
| Body of clitoris |
| 29
.
| Vestibular bulb |
| 30
.
| Major vestibular gland |
| 31
.
| Central tendon of perineum |
