O: Medial 1/3 of clavicle, sternum, cartilage of ribs 1-6

I: Crest of greater tubercle of humerus (lateral lip of bicipital groove)

A: Adduction, medial rotation, flexion, and extension of arm

N: Medial Pectoral N. (C8-T1) and Lateral Pectoral N. (C5-7)

O: Ribs 2-5/6

I: Coracoid Process

A: Depression and downward rotation of scapula

N: Medial Pectoral nerve (C8-T1)

O: First rib

I: Lower surface of clavicle

A: Depression of clavicle?

N: Nerve to subclavius (C5-6)

O: Coracoid process of scapula

I: Medial border of humerus at midshaft

A: Adduction and flexion of humerus

N: Musculocutaneous n. (C6-7)

O: Lower 2/3 shaft of humerus

I: Ulnar tuberosity

A: Powerful elbow flexor

N: Musculocutaneous n. (C5-6)

O: LH: Supraglenoid tubercle of the scapula

    SH: Coracoid process

I: Radial tuberosity and bicipital aponeurosis

A: Flexion of elbow, supination of forearm (Flexion, adduction, medial rotation of humerus)

N: Musculocutaneous (C5-6)

O: LongH: Infraglenoid tubercle of scapula

    LatH: Posterior shaft of humerus, lateral to spiral groove

    MH: Postersior shaft of humerus, below spiral groove

I: Olecranon process of Ulna

A: Extension of elbow

    LongH: Extension and adduction of humerus

N: Radial n. (C6-8)

O: Lateral epicondyle of humerus

I: Lateral side of olecranon process of ulna

A: Extension of elbow

N: Radial n.