Subclavius
Chest
Deep muscle — it lies under other muscles. X-ray makes the muscles over it see-through.
- Origin
- First rib and its costal cartilage
- Insertion
- Underside of the clavicle
- Action
- Pulls the clavicle down and forward, steadying it
- Nerve supply
- Nerve to subclavius (C5–C6)
A small muscle tucked under the collarbone. It holds the clavicle steady against the breastbone during shoulder movements.
Subclavius anatomy page →