Serratus Anterior
Musculus serratus anterior
The 'boxer's muscle' along the ribs; anchors the scapula to the rib cage.
- Group
- Shoulder
- Works with
- Lower Trapezius
- Opposes
- Rhomboids
Function
Scapular protraction and upward rotation.
Origin
Lateral surface of ribs 1–8 (or 9).
Insertion
Medial border of the scapula (its anterior surface).
Synergists / Antagonists
Atlas set · written by hand
Movements with hand-written form cues and common mistakes.