| 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 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 obliquus capitis muscle (cut across) |
| 15
.
| Occipital bone (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 (spinal) |
| 18
.
| Rotator muscle (cut near origin) |
| 19
.
| Posterior vertebral venous plexus (posterior to vertebral arches) |
| 20
.
| Cervical vertebral arch IV (cut across) |
| 21
.
| Cervical vertebral arch VI with attachment of ligamentum flavum visible along upper margin |
| 22
.
| Spinous process cervical vertebra VI |
| 23
.
| Spinous process cervical vertebra VII (vertebra prominens) |
| 24
.
| Levator scapulae muscle |
