| 1
.
| Filum terminale (right coccygeal nerve fused to posterior aspect of filum and not visible in view) |
| 2
.
| Vertebral canal (pointer indicates interior surface of superficial dorsal sacrococcygeal ligament covering sacral hiatus) |
| 3
.
| Sacral nerve V |
| 4
.
| Rami communicantes |
| 5
.
| Sacral nerve IV |
| 6
.
| Nerve to levator ani muscle and coccygeus muscle |
| 7
.
| Ramus lateral sacral artery |
| 8
.
| Upper pointer: Sacral nerve V (visible through opening in tendon of coccygeus muscle) Lower pointer: Lateral branch sacral artery |
| 9
.
| Coccygeus muscle |
| 10
.
| Anococcygeal ligament |
| 11
.
| Anal canal (remnant cut across close to pelvic diaphragm) |
| 12
.
| Internal vertebral venous plexus |
| 13
.
| Sacral nerve V |
| 14
.
| Coccygeal nerve |
| 15
.
| Sympathetic trunk (a ganglion lies just above pointer) |
| 16
.
| Sacral nerve IV |
| 17
.
| Coccyx (body partially removed) |
| 18
.
| Sacral nerve V |
| 19
.
| Periosteum on anterior surface of coccyx |
| 20
.
| Median sacral artery |
| 21
.
| Sympathetic trunk |
| 22
.
| Coccygeus muscle (cut off) |
| 23
.
| Ganglion of sympathetic trunk |
| 24
.
| Upper pointer: Glomus coccygeum Lower pointer: Periosteum covering end piece of coccyx (fibers transversely banded) |
| 25
.
| Coccyx (endpiece) |
