1
.
| Dural 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
.
| Branch of lateral sacral artery |
8
.
| Upper pointer: Sacral nerve V (visible through opening in tendon of coccygeus muscle) Lower pointer: Branch of lateral 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
.
| Middle sacral artery |
21
.
| Sympathetic trunks |
22
.
| Coccygeus muscle (cut off) |
23
.
| Ganglion of sympathetic trunk |
24
.
| Upper pointer: Coccygeal glomus Lower pointer: Periosteum covering end piece of coccyx (fibers transversely banded): |
25
.
| Coccyx (end piece) |