Vertex of skull
C1
Temple, forehead, occiput
C2
Entire neck, posterior cheek, temporal area, prolongation forward under mandible
C3
Shoulder area, clavicular area, upper scapular area
C4
Deltoid area, anterior aspect of entire arm to base of thumb
C5
Anterior arm, radial side of hand to thumb and index finger
C6
Lateral arm and forearm to index, long, and ring finger
C7
Medial arm and forearm to long, ring, and little fingers
C8