Cranial Nerves Flashcards Preview

cathy's COMPS/Praxis > Cranial Nerves > Flashcards

Flashcards in Cranial Nerves Deck (12):
1

CN I

olfactory, S

innervates olfactory bulb

smell

damage: anosmia: loss of smell/taste

2

CN II

optic, S

innervates retina

vision

damage: loss of vision...

before optic chiasm: loss vision on same side as damage

in optic chiasm: bitemporal hemianopia

after optic chiasm: loss vision on opposite side as damage

3

CN III

oculomotor, M

innervates muscles of eye

eye movement: eyeball, pupil, upper eyelid

damage: ptosis, double vision

4

CN IV

trochlear, M

innervates superior oblique eye muscle

function: superior oblique eye movement (down and in)

damage: diplopia: double vision STACKED VERTICALLY, diff. down stairs

5

CN V

trigeminal, B

sensory: face
motor: mouth/mastication

largest nerve, 3 branches

damage: loss sensations to face, diff. mastication and lateral jaw movement

6

CN VI

abducens, M

innervates lateral rectus eye muscle

function: rotates eyes outward/ABDUCTION

damage: diplopia: CROSS EYE

7

CN VII

facial, B

innervates buccal muscles and obicularis oris

sensory: anterior ⅔ tongue, velum

motor: face muscles

damage: loss of taste in ⅔ tongue, Bell's Palsy

8

CN VIII

vestibulocochlear, S

function: hearing and balance

innervates cochlea

damage: tinnitus, (sensorineural) HL, vertigo

9

CN IX

glossopharyngeal, B

innervates: tongue, pharynx, larynx

sensory: posterior ⅓ tongue
motor: pharynx, larynx

damage: dysphagia (poor laryngeal elevation: aspiration)

10

CN X

vagus, B

innervates: larynx, pharynx, visceral organs

sensory: visceral organs
motor: intrinsic muscles of larynx, pharynx

damage: dysphagia, PARALYSIS of larynx, pharynx (speech)

11

CN XI

accessory, M

innervates/function: sternocleidomastoid, traps, velum

damage: diff. turning head, shrugging shoulders, poor VP closure

12

CN XII

hypoglossal, M

innervates/function: muscles of tongue

damage: movement of tongue: swallowing and speech