1
.
| Hypoglossal nerve (XII) |
2
.
| Internal jugular vein |
3
.
| Accessory nerve (XI) |
4
.
| Vagus nerve (X) |
5
.
| Internal carotid nerve (from superior cervical ganglion) |
6
.
| Anterior branch of cervical nerve I |
7
.
| Loop between first and second cervical nerves (note communications with hypoglossal nerve) |
8
.
| Gray ramus communicans (to cervical nerve I) |
9
.
| Anterior branch of cervical nerve II |
10
.
| Upper pointer: Ganglion cervical nerve III Lower pointer: Posterior branch cervical nerve III |
11
.
| Gray rami communicantes (to cervical nerves II-III) |
12
.
| Superior cervical ganglion |
13
.
| Internal carotid artery |
14
.
| Longus capitis muscle |
15
.
| Anterior arch atlas |
16
.
| Dens axis |
17
.
| Anterior rectus capitis muscle |
18
.
| Muscular branches of cervical nerve I |
19
.
| Muscular branches of cervical nerve II |
20
.
| Intervertebral disc (C. II-III) |
21
.
| Muscular branches of cervical nerve III |
22
.
| Longus colli muscle |