Table 1.

Cranial Nerves and Corresponding Movements of the Head, Neck, and Eyes

Nerve	Movement/Maneuver
CN 3, 4, and 6	Movement of eyes horizontally to the left and right, vertically up and down, and diagonally to the upper and lower corners of the visual field.
CN 5	Jaw with force bilaterally, and on either the left or right side. Jaw thrusting in the midline, to the left, and to the right.
CN 7	Movements of facial expression including eye closure, eyebrow raise, puffing the cheeks, baring the teeth, and pursing the lips.
CN 11	Shrugging the shoulders and rotating the head left and right (bringing the chin closer to the shoulder).
CN 12	Thrusting of the tongue in the midline, to the left, and to the right.
C1 and C2	Lateral flexion of the neck (bringing the ear to the shoulder), forward flexion of the neck (bringing the chin to the chest), extension of the neck (moving the head toward the back).

CN, cranial nerve; C, cervical nerve.