Arise from the spinal roots C2 and C3 and supply the lateral and anterior parts of the

neck.

Arise from the spinal roots C2 and C3 and supplying the skin of the parotid region, the ear,

and the mastoid area.

Arise from the spinal roots C3 and C4 and supply the skin over the clavicle and shoulder

as far inferiorly as rib II.

Arise from the spinal root C2 and distributes to the skin of the neck and scalp

posterior to the ear