Cranial part of accessory nerve supplies
Sternocleidomastoid and trapezius develop from branchial arch mesoderm and are supplied by spinal part of accessory nerve. 
Levator scapulae are supplied by a branch from dorsal scapular nerve and branches from C3, C4.
Sternocleidomastoid
Trapezius
Levator scapulae
Levator palatini