1
.
| Superior oblique capitis muscle (cut across) |
2
.
| Major posterior rectus capitis muscle (cut across) |
3
.
| Condyloid emissary |
4
.
| Atlanto-occipital joint capsule |
5
.
| Vertebral artery and vein |
6
.
| Posterior arch of atlas |
7
.
| Transverse process atlas |
8
.
| Styloid process |
9
.
| Anterior branch of cervical nerve II (note relation to vertebral artery) |
10
.
| Greater occipital nerve |
11
.
| Arch axis |
12
.
| Articular cavity |
13
.
| Joint capsule |
14
.
| Middle scalene muscle |
15
.
| Minor posterior rectus capitis muscle (cut across) |
16
.
| Border of foramen magnum |
17
.
| Dura mater |
18
.
| Upper pointer: Posteror tubercle atlas Lower pointer: Ligamentum flavum |
19
.
| Spinous process axis |
20
.
| Cut margins of arch of cervical vertebra III (resected) |
21
.
| Upper pointer: Ligamentum flavum Lower pointer: Interspinalis muscle |
22
.
| Dura mater (epidural space absent at this level) |