1 — Intervertebral disc; 2 — Groove for spinal nerve; 3 — Anterior longitudinal ligament; 4 — Axis [CII]; 5 — Foramen transversarium; 6 — Atlas [CI]; 7 — Lateral atlanto-occipital ligament; 8 — Internal occipital crest; 9 — Internal occipital protuberance; 10 — Occipital bone, basilar part; 11 — Anterior atlanto-occipital membrane; 12 — Transverse process; 13 — Lateral atlanto-axial joint; 14 — Zygapophysial joints; 15 — Posterior tubercle; 16 — Anterior tubercle; 17 -Vertebra prominens [CVII]
