- Peripheral Nervous System—Upper Extremity 31
DRAWING 3-1 Brachial Plexus — Partial
Radial nerve
Ulnar nerve
C5
C6
C7
C8
T1
(serratus anteiror m.)Long thoracic nerve
Upper trunk
Middle trunk
Lower trunk
Lateral cord
Posterior cord
Medial cord
Musculocutaneous nerve
(biceps brach.,
Median nerve
Anterior division
upper trunk
Posterior division
middle trunk
Posterior division
lower trunk
Anterior division
lower trunk
Dorsal scapular nerve
(rhomboid m.)
Posterior division
upper trunk
Anterior division
middle trunk