1 — Joint capsule; Articular capsule; 2 — Transverse process; 3 — Ligamenta flava; 4 — Transverse process; 5 — Styloid process; 6 — Mammillary process; 7 — Inferior nuchal line; 8 — Superior nuchal line; 9 — Occipital bone; 10 — External occipital protuberance; 11 — Posterior atlantooccipital membrane; 12 — Atlas [CI]; 13 — Axis [CII]; 14 — Ligamentum nuchae; Nuchal ligament; 15 — Spinous process
