Back and Upper Extremity Innervations and Blood Supply

Spinal accessory nerve

Trapezius

Thoracodorsal nerve

Latissimus dorsi

Dorsal scapular nerve

Levator scapulae, rhomboideus minor, rhomboideus major

Dorsal rami of spinal nerves

Splenius capitis (middle cervical spinal nerves), splenius cervicis, erector spinae group (C1-S5), semispinalis group

Ventral rami

Serratus posterior superior (T1-T4), serratus posterior inferior (T9-T12)

Axillary nerve

Deltoid (C5, C6), teres minor (C5, C6)

Suprascapular nerve

Supraspinatus (C4, C5, C6), infraspinatus (C5, C6)

Subscapular nerve

Subscapularis (upper and lower, C5, C6, C7), teres major (lower, C5, C6)

Radial nerve

Triceps brachii (C6, C7, C8), brachioradialis, extensor carpi radialis longus, extensor carpi radialis brevis, extensor digitorum, supinator, adductor pollicis longus, extensor pollicis longus, extensor pollicis brevis, extensor indicis,

Medial pectoral nerve

Pectoralis major (sternocostal portion, C7, C8, T1), pectoralis minor (C8, T1)

Lateral pectoral nerve

Pectoralis major (clavicular portion, C5, C6)

Long thoracic nerve

Serratus anterior (C5, C6, C7)

Musculocutaneous nerve

Biceps brachii and coracobrachialis (C5, C6, C7), brachialis (C5, C6)

Median nerve

Pronator teres, flexor carpi radialis, flexor digitorum superficialis, flexor pollicis longus, pronator quadratus, radial half of flexor digitorum profundus, opponens pollicis, lumbricals 1,2

Ulnar nerve

Flexor carpi ulnaris, ulnar half of flexor digitorum profundus, flexor pollicis brevis, flexor digiti minimi, abductor digiti minimi, lumbricals 3,4, opponens digiti, adductor pollicis, palmar interossei, dorsal interossei

Radial artery

Brachioradialis, extensor carpi radialis longus, extensor carpi radialis brevis

Superficial palmar branch of radial artery

Abductor pollicis brevis, flexor pollicis brevis, opponens pollicis

Interosseous recurrent artery (branch of ulnar artery)

Extensor digiti minimi, supinator,

Posterior interosseous artery (branch of ulnar artery)

Abductor pollicis longus, extensor pollicis longus, extensor pollicis brevis, extensor indicis,

Anterior interosseous artery (branch of ulnar artery)

Flexor pollicis longus, flexor digitorum profundus, pronator quadratus

Ulnar artery

flexor digitorum profundus, extensor carpi ulnaris, pronator teres, flexor carpi radialis, ulnar artery, flexor carpi ulnaris, flexor digitorum superficialis, flexor digiti minimi brevis, abductor digiti minimi, opponens digiti,

Superficial palmar arterial arch

Lumbricals,

Deep palmar arterial arch

adductor pollicis

Palmar metacarpal arteries

palmar interossei, dorsal interossei

dorsal metacarpal arteries

Dorsal interossei

Thoracoacromial artery

Deltoid (deltoid branch), pectoralis major and minor (pectoral branch)

Anterior circumflex humeral artery

Deltoid, coracobrachialis

Posterior circumflex humeral artery

Deltoid

Suprascapular artery

Supraspinatus, infraspinatus

Subscapular artery

Infraspinatus, teres minor, subscapularis, teres major

Circumflex scapular artery

Infraspinatus, teres minor, teres major

Deep brachial artery

Triceps brachii

Posterior circumflex humeral artery

triceps brachii

Long thoracic artery

Serratus anterior

Brachial artery

Biceps brachii, coracobrachialis, brachialis,

Transverse cervical artery

trapezius

thoracodorsal artery

latissimus dorsi

dorsal scapular artery

levator scapulae, rhomboideus minor, rhomboideus major

occipital artery

splenius capitis, splenius cervicis, semispinalis group

Posterior intercostal arteries

serratus posterior superior (1-4), serratus posterior inferior (lowest), erector spinae group

Subcostal arteries

serratus posterior inferior, erector spinae group

Lumbar arteries

serratus posterior inferior (first two), erector spinae group

Deep cervical artery

erector spinae group