1. Shoulder Muscles
Sports Medicine I

2. Shoulder Movements Flexion Extension Abduction Adduction
Horizontal Abduction
Internal Rotation (0 and 90)
External Rotation (0 and 90)

3. Shoulder Movements Circumduction Elevation Depression Protraction
Retraction

4. Biceps
Flexion
Supination

5. Coracobrachialis
Adduction
Assists flexion and pronation

6. Deltoid Anterior Fibers Middle Fibers Posterior Fibers
Flexion, horizontal adduction, internal rotation, external rotation

7. Infraspinatus
External rotation
(rotator cuff)

8. Lattisimus Dorsi
Extends arm

9. Levator Scapulae
Elevates scapula

10. Pectoralis Major
Flexes upper arm
Adducts arm

11. Pectoralis Minor
Raises ribs for inspiration

12. Rhomboids
Retraction and rotation of scapula

13. Serratus Anterior
Rotates scapula for abduction

14. Subscapularis
Internal rotation
(rotator cuff)

15. Teres Major
Assists in extension

16. Teres Minor
External rotation
(rotator cuff)

17. Trapezius
Retraction
Upward rotation
Elevates scapula

18. Triceps
Extends forearm and upper arm