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- Coracobrachialis:
- O: coracoid process
- I: proximal humerus
- N: musculocutaneous nerve
- A: Flexes and medially rotates arm
- Pectoralis Major:
- O: clavicle, sternum, costal cartilages 1-6
- I: greater tubercle
- N: musculocutaneous nerve
- A: flexes, adducts, and medially rotates humerus
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-
- Latissiumus Dorsi:
- O: vertebral column (T6 - S)
- I: intertubercular groove
- A: extends the shoulder
- Teres Major:
- O: inferior angle of scapula
- I: intertubercular groove
- A: extends and medially rotates humerus (arm swinging)
-
- Supraspinatus:
- O: supraspinous fossa
- I: greater tubercle of humerus
- A: aids deltoid in abduction of arm
- Deltoid:
- O: scapula acromion, scapula spine, clavile
- I: deltoid tuberosity of humerus
- A: abduct arm (aids in swinging such as bowling)
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-
- Teres Minor:
- O: axillary, lateral border of scapula
- I: greater tubercle
- N: axillary n.
- A: rotates humerus laterally
-
- Infraspinatus:
- O: infraspinous fossa of scapula
- I: greater tubercle of humerus
- A: rotates humerus laterally
-
- Subscapularis:
- O: subscapular fossa of scapula
- I: lesser tubercle of humerus
- A: rotates humerus medially
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-
-
- Serratus Anterior:
- O: all or nearly all ribs (lateral 9)
- I: anterior vertebral border of scapula
- A: moves scapula forward and down (reaching down to pick up suitcase)
- Pectoralis Minor:
- O: ribs 3-5
- I: coronoid process of scapula
- A: same, moves scapula forward and down
-
- Levator Scapulae:
- O: vertebral column; C1-C4
- I: medial border scapula (supraspinous)
- A: elevates, adducts, rotates scapula
- Rhomboid Minor:
- O: vertebral column C7-T1
- I: medial border of scapula (spine)
- A: same
- Rhomboid Major:
- O: vertebral column T2-T5
- I: medial border of scapula (infraspinous)
- A: same
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-
- Trapezius:
- O: occiptal bone through T12 of vertebral column
- I: acromion and spine of scapula, clavicle
- A: stabilizes and elevates scapula and shoulder
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