olfactory (I)
transports impulses for sense of smell
optic (II)
carries impulses for sense of sight
oculomotor (III)
motor impulses for eye muscle movement and the pupil of the eye
trochlear (IV)
controls superior oblique muscle of eye on each side
trigeminal (V)
carries sensory facial impulses and controls muscles for chewing; branches into eyes, forehead, upper and lower jaw
abducens (VI)
controls an eyeball muscle to turn eye to side
facial (VII)
controls facial muscles for expression, salivation, and taste on two-thirds of tongue (anterior)
vestibulocochlear (VIII)
responsible for impulses of equilibrium and hearing; also called auditory nerve
glossopharyngeal (IX)
carries sensory impulses from pharynx (swallowing) and taste on one-third of tongue
vagus (X)
supplies most organs in abdominal and thoracic cavities
accessory (XI)
controls the neck and shoulder muscles
hypoglossal (XII)
controls tongue muscles