1
.
| Occipital bone (pointer at margin of foramen magnum) |
2
.
| Mastoid emissary vein |
3
.
| Dura mater |
4
.
| Occipital artery |
5
.
| Superior oblique capitis muscle |
6
.
| Left vertebral artery |
7
.
| Posterior arch of atlas (cut across) |
8
.
| Inferior oblique capitis muscle |
9
.
| Greater occipital nerve |
10
.
| Arch of axis (cut across) |
11
.
| Dura mater |
12
.
| Splenius capitis muscle |
13
.
| Nerve to semispinalis capitis muscle |
14
.
| Posterior external vertebral venous plexus |
15
.
| Occipital sinus and falx cerebelli |
16
.
| Arachnoid covering cerebellar tonsil |
17
.
| Cerebellomedullary cistern |
18
.
| Dorsal roots cervical nerve II |
19
.
| Spinal roots accessory nerve (XI) |
20
.
| Deep cervical artery |
21
.
| Posterior external vertebral venous plexus |
22
.
| Dorsal roots cervical nerve VI |
23
.
| Arch of vertebra C. VII |