Cranial Nerves

Olfactory

All sensory, sense of smell

found resting on the cribiform plate of the ethmoid bone

olfactory/CN1

Optic

all sensory
sight

underside of the cerebrum in an X formation

CN2/Optic

Oculomotor

all motor
eye movement

runs from midbrain to the muscles surrounding the eye

CN3/Oculomotor

Trochlear

all motor
superior oblique muscle of eye

runs from midbrain to the superior muscle of the eye

CN4/Trochlear

Trigeminal

both motor and sensory
3 branches
branch 1 and 2 are sensory for the face
branch 3 has sensory and motor for chewing muscles

originates in pons

CN5/Trigeminal

Abducens

motor only
lateral rectus muscle

originates in pons, runs to lateral muscle of the eye

CN6/Abducens

Facial

both motor and sensory
provides motor for facial expression, secreting tears and saliva
sensory for taste

originates in pons, has 5 branches

facial

Vestibulocochlear

sensory only
sound

found within the inner ear

CN8/Vestibulocochlear

Glossopharyngeal

both motor and sensory
throat and tongue area

originates in the medulla and runs to the carotid body, pharynx and tongue

CN9 / glossopharyngeal

Vagus

both motor and sensory
many abdominal cavity organs

originates in the medulla and innervates most abdominal cavity organs

CN10/Vagus

Accessory

mostly motor
some neck muscles

originates in the medulla and innervates SCM and trapezius

CN11/Accessory

Hypoglossal

only motor
tongue

originates in the medulla and innervates the tongue

CN12/Hypoglossal