Shoulder
Serratus Anterior
Musculus serratus anterior

The 'boxer's muscle' along the ribs; anchors the scapula to the rib cage.
- Function
- Scapular protraction and upward rotation.
- Origin
- Lateral surface of ribs 1–8 (or 9).
- Insertion
- Medial border of the scapula (its anterior surface).
How this muscle is trained
Serratus Anterior is worked as the primary target in 2 of the 6 exercises listed here, and as a supporting muscle in the rest. The equipment those exercises use: Bodyweight, Dumbbell, Barbell.