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What is the origin of the Pectoralis Major?
1) medial 1/3 of the clavicle
2) manubrium and body of sternum
3) costal cartilages of ribs 1-6
What is the insertion of the Pectoralis Major?
greater tubercle of the humerus
What is the action of the Pectoralis Major?
1) adducts the arm at the shoulder
2) medial rotation of the arm at the shoulder
What is the origin of the Pectoralis Minor?
Ribs 3-5
What is the insertion of the Pectoralis Minor?
coracoid process of the scapula
What is the action of the Pectoralis Minor?
1) depression and lateral rotation of the scapula
2) elevates ribs in forced inspiration
What is the origin of the Serratus Anterior?
Ribs 1-8
What is the insertion of the Serratus Anterior?
anterior (costal) surface of vertebral border of the scapula
What is the action of the Serratus Anterior?
1) protracts scapula
2) stabilizes scapula
3) helps with upward rotation of scapula
What is the innervation of the Serratus Anterior?
long thoracic nerve, C5-C7