Root: C5
Associated nerves:
Phrenic nerve
Dorsal scapular nerve
Long thoracic nerve
Subclavian nerve
Suprascapular nerve
Lateral pectoral nerve
Upper subscapular nerve
Lower subscapular nerve
Musculocutaneous nerve
Axillary nerve
Radial nerve
Motor innervation:
Rhomboideus major and minor
Levator scapulae
Serratus anterior
Subclavius
Supraspinatus
Infraspinatus
Pectoralis minor (lateral part)
Pectoralis major (lateral part)
Subscapularis (upper part)
Subscapularis (lower part)
Teres major
Pectoralis major (medial part)
Biceps brachii
Brachialis
Deltoid
Teres minor
Brachioradialis
Sensory innervation:
Pericardium and pleura
Forearm, radial surface
Arm, superior, lateral aspect
Arm, forearm and distal phalanges