1 — Spinous process; 2 — Inferior articular process; 3 — Superior articular process; 4 — Vertebral foramen; 5 — Vertebral body; 6 — Superior vertebral notch; 7 — Costal process; 8 — Accessory process; 9 — Mammillary process; 10 — Superior articular facet; 11 — Inferior articular
facet; 12 — Inferior vertebral notch