1
.
| Cerebellum (dura removed, arachnoid intact) |
2
.
| Occipital artery |
3
.
| Medulla oblongata visible through cerebellomedullary cistern (arachnoid intact) |
4
.
| Vertebral artery (lying amidst venous plexus) |
5
.
| Posterior arch of atlas (cut across) |
6
.
| Greater occipital nerve |
7
.
| Third occipital nerve |
8
.
| Splenius capitis muscle (reflected) |
9
.
| Posterior external vertebral venous plexus (between muscle layers) |
10
.
| Semispinalis capitis muscle (reflected) |
11
.
| Splenius cervicis muscle (reflected) |
12
.
| Semispinalis cervicis muscle (cut across) |
13
.
| Posterior meningeal artery |
14
.
| Superior oblique capitis muscle (cut across) |
15
.
| Occipital bone (pointer at margin of foramen magnum) |
16
.
| Posterior atlanto-occipital membrane (atlas and the occipital bone to which this was attached have been removed) |
17
.
| Dura mater |
18
.
| Rotator muscle (cut near origin) |
19
.
| Posterior external vertebral venous plexus (posterior to vertebral arches) |
20
.
| Lamina (arch of vertebra) C. IV (cut across) |
21
.
| Lamina (arch of vertebra) C. VI with attachment of ligamentum flavum visible along upper margin |
22
.
| Spinous process vertebra C. VI |
23
.
| Spinous process vertebra C. VII (vertebra prominens) |
24
.
| Levator scapulae muscle |