Anterior view of the thoracic skeleton
| Term name | Layer | |
|---|---|---|
| 1 | Superior thoracic aperture; thoracic inlet | Layer 1 |
| 2 | Inferior thoracic aperture; thoracic outleet | Layer 1 |
| 3 | Intercostal space | Layer 1 |
| 4 | Costal margin; costal arch | Layer 1 |
| 5 | Infrasternal angle; subcostal angle | Layer 1 |
| 6 | Rib | Layer 1 |
| 7 | Costal cartilage | Layer 1 |
| 8 | Floating ribs [XI-XII] | Layer 1 |
| 9 | False ribs [VIII-XII] | Layer 1 |
| 10 | True ribs [I-VII] | Layer 1 |
| 11 | Ribs [I-XII] | Layer 1 |
| 12 | Jugular notch; suprasternal notch | Layer 2 |
| 13 | Pulmonary groove | Layer 2 |
| 14 | Costal notches | Layer 2 |
| 15 | Xiphoid process | Layer 2 |
| 16 | Body of sternum | Layer 2 |
| 17 | Xiphisternal joint | Layer 2 |
| 18 | (Manubriosternal synchondrosis) | Layer 2 |
| 19 | Clavicular notch | Layer 2 |
| 20 | Manubrium of sternum | Layer 2 |
| 21 | Sternum | Layer 2 |