Table 2 Summary of the most important “end-organ muscles”

III

Superior, inferior, medial rectus, and inferior oblique muscles

IV

Superior oblique muscle

V

Muscles of mastication: masseter, temporalis, and pterygoid (V3)

VI

Lateral rectus muscle

X

Vocal cords

XI

Sternocleidomastoid, trapezius muscles

XII

Tongue muscles