Root: T1
Associated nerves:
Medial pectoral nerve
Median nerve
Ulnar nerve
Medial antebrachial cutaneous nerve
Motor innervation:
Pectoralis major (lateral part)
Pectoralis minor (medial part)
Pectoralis major (medial part)
Flexor digitorum profundus I & II
Pronator quadratus
Abductor pollicis brevis
Flexor pollicis brevis (superficial head)
Opponens pollicis
Lumbricales I & II
Flexor carpi ulnaris
Flexor digitorum profundus III & IV
Palmaris brevis
Adductor pollicis
Flexor pollicis brevis (deep head)
Abductor digiti minimi
Opponens digiti minimi
Flexor digiti minimi
Lumbricales III & IV
Palmar interossei
Dorsal interossei
Sensory innervation:
Medial aspect of arm and forearm