Origin
Superolateral surfaces of the first to eighth or ninth ribs
Insertion
Superior angle, medial border, and inferior angle of the scapula
Actions
- Protraction of the scapula
- Upward rotation of the scapula
- Can assist with respiration by lifting the ribs
Innervation
- Long thoracic nerve (C5, C6, C7)
Blood Supply
- Lateral thoracic artery
- Superior thoracic artery
- Thoracodorsal artery
Would you like to learn more about the serratus anterior muscle? Then check out the serratus anterior muscle article and video by clicking the link below: Serratus Anterior Muscle Anatomy
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