Cranial Nerve Flashcards
(12 cards)
CNI
Olfactory
Sensory
Smell-alcohol pad
unilaterial or bilaterial anosmia (loss of smell)
CNII
Optic
Sensory
Visual acuity - Snellen chart
optic atrophy, amblyopia (reduction in vision)
CNIII
Oculomotor
Motor
Extraocular eye movement, raise eyelids, pupil constriction - PERRLA & 6 fields of gaze
Diplopia (double vision), ptosis of the eye lid
CNIV
Trochlear
Motor
Downward/inward Eye movement - PERRLA & 6 fields of gaze
Convergent , Strabismus (visual axes do not meet at the desired point), diplopia
CNV
Trigeminal
Both
Motor - chewing -clench jaw
Sensory- lacrimal sensation - close eyes and identify touch of cotton ball to forehead/cheek/jawline
Decreased ability to chew; loss of facial sensation
CNVI
Abducens
Motor
Lateral Eye Movement - 6 fields of gaze
Diplopia, strabismus (one eye unable to focus on the same object as other eye)
CNVII
Facial
Both
Motor- Facial expressions - smile, puff out cheeks
Sensory - tast - anterior 2/3rds of the tongue - identify sweet/salty
Bell’s Palsy
Decreased ability to distinguish taste
CNVIII
Acoustic Sensory Hearing - whisper test Equilibrium - close eyes and check balance Tinnitus - ringing in ears Vertigo
CNIX
Glossopharyngeal
Both
Motor - Swallowing - gag reflex with tongue depressor
Sensory - Taste - Posterior 2/3rds of the tongue - identify sweet/salty
Loss of gag reflex
Loss of taste
CNX
Vagus
Both
Motor - Swallowing - movement of the palate & uvula when saying ‘ah’
Sensory - Phonation - guttural speech saying ‘garage’ or garbage’
Difficulty swallowing
loss of voice or impaired speaking
CNXI
Spinal Accessory Motor Headmovement-turn left and right Shoulder movement-shrug shoulders against resistance Inability to turn head left and right Difficulty shrugging shoulders
CNXII
Hypoglossal
Motor
Move tongue - up & down, side to side
Dysphasia, tongue deviates to side
