Cranial Nerves Flashcards
Name of CN I
Olfactory
Function of CN I
Sensory - controls the sense of smell
How to test CN I
Place a smell under the patient’s nose and see if they can identify it
Name of CN II
Optic
Function of CN II
Sensory - controls central and peripheral vision
How to test CN II
- vision charts
- peripheral vision test - note when the patient can no longer see you fingers as you move them further away laterally
Name of CN III
Oculomotor
Function of CN III
sensory & motor - pupilar restriction
How to test CN III
Penlight in eyes - look for PERRLA
Name of CN IV
Trochlear
Function of CN IV
motor - moves eye down
How to test CN IV
6 cardinal fields of gaze
Name of CN V
Trigeminal
Function of CN V
motor & sensory - face
How to test CN V
- check sensory with cotton ball and sharp object - looking for identification of sharp or dull sensation identification
- coordinal reflex check (mostly used in unconscious patients)
- look to see if they can move their mouth (talking, chewing)
Name of CN VI
Abducens
Function of CN VI
Motor - lateral eye movement
How to test CN VI
6 cardinal fields of gaze
Name of CN VII
Facial
Function of CN VII
motor - facial movements and expression
How to test CN VII
ask them to scrunch their eyes, smile, or puff up mouth
Name of CN VIII
Acoustic
Function of CN VIII
sensory - hearing, balance
how to test CN VIII
- whisper test
- rub fingers by the ear
- ask about vertigo
Name of CN IX
Glossopharyngeal
Function of CN IX
sensory & motor - swallowing, taste
how to test CN IX
gag reflex
Name of CN X
Vagus
Function of CN X
motor - tongue/throat
how to test CN X
talking
name of CN XI
Spinal accessory
Function of CN XI
motor - neck, shoulder
how to test CN XI
shrug shoulder against resistance
name of CN XII
hypoglossal
function of CN XII
motor - tongue movement
how to test CN XII
stick out tongue
