The pectoralis minor muscle is a thin triangular shaped muscle which lies deep to the much larger and more powerful pectoralis major muscle.
- Anteromedial surfaces of ribs 3-5
- Coracoid process of scapula
- Depresses shoulder
- Protracts scapula
- Stabilise scapula against the chest wall
- Medial pectoral nerves
- Clavicular branch of thoracoacromial trunk