1 — Superior thoracic aperture; Thoracic inlet; 2 — Jugular notch; Suprasternal notch; 3 — Clavicular notch; 4 — Manubrium of sternum; 5 — Sternal angle; 6 — Body of sternum; 7 — Xiphoid process; 8 — Sternum; 9 — Costal cartilage; 10 — Costal margin; Costal arch; 11 — Inferior thoracic aperture; Thoracic outlet; 12 — Spinous process; 13 — Tubercle; 14 — Angle of rib; 15 — Rib [XII]
