- Long thoracic nerve (nerve to serratus anterior): root value C5, C6, C7, supplying serratus anterior; its injury produces winging of the scapula.
Serratus Anterior: Origin, Insertion, Nerve Supply and Action
- Serratus anterior keeps the medial (vertebral) border of the scapula in firm contact with the chest wall.
Serratus anterior, origin, insertion, nerve supply and action
Attribute
Origin
- Details
- 8 digitations from upper 8 ribs; first digitation from ribs 1 and 2, remaining digitations from their corresponding ribs
Insertion
- Details
- Costal surface of scapula along its medial border: digitations 1 to 2 to superior angle, digitations 3 to 4 to medial border, lower 4 to 5 digitations to inferior angle
Nerve supply
- Details
- Long thoracic nerve (nerve to serratus anterior), root value C5, C6, C7
Action
- Details
- Protracts scapula around chest wall for pushing and punching (boxer's muscle); keeps medial border of scapula against chest wall; lower digitations, with lower trapezius, rotate scapula laterally and upward during overhead abduction