Myotomes: Muscles and innervation of upper limb

Created by ahajiran078 

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Lateral rotation of the arm

Infraspinatus (Supscapular = C5/C6)
Teres minor (Axillary = C5/C6)
Deltoid, posterior (Axillary = C5/C6)

Medial rotation of the arm

Subscapularis (Subscapular = C5,C6,C7)
Teres major (Lower Subscapular = C6)
Pecroalis major (Medial and lateral pectoral = C5,C6,C7)
Latissimus dorsi (Thoracodorsal = C7)
Deloid, anterior (Axillary = C5,C6)

Abduction of the arm

Deltoid (Axillary = C5/C6)
Supraspinatous (Suprascapular = C5/C6)
Serratous anterior (Long thoracic)
Trapezius (C11)

Abduction of the fingers

Dorsal interosseous (Ulnar = T1/C8)

Adduction of the arm

Pectoralis major (Medial and Lateral =C6, C7)
Latissimus dorsi (Throacodorsal = C6,C7)
Teres major (Lower subscapular= C6)
Subscapularis (Subscapular = C6)
Coracobrachialis (musculocutaneous)

Adduction of the fingers

Palmar interosseous (Ulnar = T1/C8)

Flexion at the elbow

Brachialis (Musculocutaneous = C5/C6)
Biceps brachii (Musculocutaneous = C5/C6)
Brachioradialis (Radial = C5,C6 . . . )

Extension at the elbow

Triceps (Radial= C7/C8 . . . )
Acroneous (Radial = C7/C8 . . . )

Wrist flexion

Flexor carpi radialis (Median = C6,C7,C8)
Flexor carpi ulnaris (Ulnar = C8,T1))
Long flexors of thumb and fingers (Median/Ulnar)

Wrist extension

Extensor carpi radialis longus (Radial = C6,C7,C8)
Extensor carpi radialis brevis Radial)
Extensor carpi ulnaris (Radial)
Long extensors of thumb and fingers (Radial)

Supination of forearm

Supinator (Radial = C6)
Biceps brachii (Musculocutaneous = C6)

Pronation of forearm

Pronator teres (median = C7,C8)
Pronator quadratus (median = C7,C8)

Flexion of arm at shoulder

Pectoralis major (Medial and lateral)
Deltoid, anterior (Axillary)
Coracobrachialis (Musculocutaneous)
Bicels brachii, long head (Musculocutaneous)
C5/C6

Extension of arm at the shoulder

Latissimus dorsi (Thoracodrosal)
Teres major (lower subscapular)
Deltoid, posterior (axillary)
C6/C7

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