1. MUSCLES OF THE CHEST & BACK

2. MUSCLES OF SCAPULAR STABILIZATION
Trapezius
Rhomboid major, minor
Levator scapula
Serratus anterior
Pectoralis minor

3. Trapezius O: Occiput & spines of C7, T1-T12
I: Clavicle (lateral 1/3 & acromion process) & spine of scapula
A: Elevates, retracts, depresses scapula
A: Extends neck when O/I switched

4. Trapezius – Spino, Acromio, clavotrapezius

5. Rhomboid Major, Minor O: Spinous processes: minor- C7-T1; major T2-T5
I: Vertebral border of scapula
A: Retracts scapula

6. Rhomboid Minor, Major

7. Levator Scapula O: Transverse processes C1-C4
I: Upper medial border of scapula
A: Elevates scapula
A: Extends neck when
O/I switched

8. Levator Scapula

9. Serratus Anterior O: Ribs 1-8
I: Medial border of scapula (costal side)
A: Protracts scapula

10. Serratus Anterior

11. Pectoralis Minor O: Ribs 3-5 I: Coracoid process of scapula
A: Depression, protraction of scapula

12. Pectoralis Minor

13. Brachial Plexus

14. MUSCLES OF THE ROTATOR CUFF (MUSCULOTENDINOUS CUFF)
Supraspinatus
Infraspinatus
Teres minor
Subscapularis

15. Rotator Cuff

16. Supraspinatus O: Supraspinous fossa of scapula
I: Greater tubercle of humerus
A: Abducts arm

17. Supraspinatus

18. Infraspinatus O: Infraspinous fossa of scapula
I: Greater tubercle of humerus
A: Adducts arm
A: Laterally rotates arm

19. Infraspinatus

20. Teres Minor O: Axillary border of scapula
I: Greater tubercle of humerus
A: Laterally rotates arm
Posterior view
Posterior view
Anterior view

21. Teres Minor

22. Subscapularis O: Subscapular fossa of scapula
I: Lesser tubercle of humerus
A: Medially rotates arm

23. Subscapularis

24. MUSCLES ACTING ON THE SHOULDER JOINT
Deltoid
Pectoralis major
Latissimus dorsi
Teres major

25. Deltoid O: Lateral clavicle, spine of scapula
I: Deltoid tuberosity of humerus
A: Abducts arm
A: Ant. Fibers: flexes/ medially rotates arm
A: Post. Fibers: extends/ laterally rotates arm

26. Deltoid – Spino, acromio, clavodeltoid

27. Pectoralis major
O- Medial clavicle, sternum, costal cartilages of ribs
I- Intertubercular groove of humerus
A- Adducts, medially rotates arm

28. Pectoralis major

29. Latissimus dorsi
O: Spines of lower thoracic & lumbar vertebrae, iliac crest
I: Intertubercular groove of humerus
A: Extends, adducts, medially rotates arm

30. Latissimus dorsi

31. Teres major O- Axillary border of scapula
I- Intertubercular groove of humerus
A- Adducts, medially rotates, extends arm

32. Teres Major

33. DEEP MUSCLES OF THE BACK
1) Erector Spinae
2) Iliocostalis
3) Longissimus
4) Spinalis
5) Splenius
Cervicis & Capitus

35. Deep Back Muscles