cranial nerve mnemonic
Oh, Oh, Oh, To, Touch, And, Feel, A, Girls, Very, Soft, Hands
I
Olfactory
Sensory
What categories does Nerve I have?
Sensory: smell
What does Nerve I do?
II
Optic
III
Oculomotor
IV
Trochlear
V
Trigeminal
VI
Abducens
VII
Facial
VIII
Vestibulocochlear
IX
Glossopharyngeal
X
Vagus
XI
Spinal Accessory
XII
Hypoglossal
vision Opthalmoscopic exam
What does Nerve II do?
Eye movement 6 cardinal positions & PERRLA
Parasympathetic: contracts intrinsic muscles of eye for near vision and pupil constriction
What does Nerve III do?
Motor: contracts superior oblique muscle(eye)
What does Nerve IV do?
Sensory: touch from face/upper cranium
Motor: moves mandible (chewing; speech)
What does Nerve V do?
Motor: contracts lateral rectus muscle (eye)
What does Nerve VI do?
Sensory: taste
Motor: facial expression
What does Nerve VII do?
Sensory: hearing and balance.
What does Nerve VIII do?
Sensory: taste
Motor: swallowing gag reflex
What does Nerve IX do?
Sensory: taste
Motor: tongue and throat
What does Nerve X do?
Motor: contract sternocleidomastoid and trapezius
What does Nerve XI do?
Contracts muscles of tongue
What does Nerve XII do?
Olfactory (I)
Optic (II)
Oculomotor (III)
Trochlear (IV)
Trigeminal (V)
Abducens (VI)
Facial (VII)
Vestibulocochlear (VIII)
Glossopharyngeal (IX)
Vagus (X)
Accessory (XI)
Hypoglossal (XII)
Loss of hearing, and issues with sense of balance, vertigo.
What happens when you damage Vestibulocochlear (VIII)?
Loss of "gag reflex
What happens when you damage Glossopharyngeal (IX)?
Sometimes "overactive", and affects the stomach, which causes the stomach to overproduce acid. This can lead to ulcers.
What happens when you damage Vagus (X)?
Shoulder drop, generally due to the fault in Trapezius.
What happens when you damage Accessory (XI)?
Trigeminal Neuralgia (tic douloureux): When, for an unknown reason, the trigeminal nerve freaks out and causes intense, random excruciating pain
What happens when you damage Trigeminal (V)?
Eye cannot move to the side, or laterally.
What happens when you damage Abducens (VI)?
Bell's palsy: Cannot smile on one half of the body, taste is altered, facial expression inactive on one side, eyes may also start to dry out. Generally goes away, but we don't really know what causes it.
What happens when you damage Facial Nerve (VII)?
Loss of the sense of smell.
What happens when you damage Olfactory (I)?
Loss of vision out of one eye, if you cover up the non-damaged eye they can see nothing.
What happens when you damage Optic (II)?
Difficulty in moving at least one eye, droopy eyelids, abducted a little bit
What happens when you damage Oculomotor (III)?
Downward gaze of the eye, head will often be tilted simply to compensate for the weakness and the downward gaze.
What happens when you damage Trochlear (IV)?