Cranial nerve tests Flashcards
CN I
Ophthalmic - identify smells
CN II
Optic - read Snellen chart, assess when finger is observed moving into the visual field
CN III
Oculomotor - Pupil shape = round, equal, and +2. Pupillary reflex with penlight, convergence and ability to follow H pattern
CN IV
Trochlear - Follow figure H with eyes
CN V
Trigeminal - sensations of pain, touch and temperature of the face. “can you feel this?”
CN VI
Abducents - Follow figure H with eyes
CN VII
Facial - Taste in first 2/3 of tongue, symmetry of face, close eyes, smile, frown, tearing function
CN VIII
Vestibulocochlear - Finger rub, Weber and Rinne, Romberg tests.
CN IX
Glossopharyngeal - taste posterior 1/3, gag reflex, position of uvula, speak or swallow
CN X
Vagus - speak or swallow
CN XI
Accessory - shoulder shrug, head rotation to resistance
CN XII
Hypoglossal - no deviation of tongue upon extension
Normal conduction of hearing
air conduction is longer than bone conduction
Weber’s test evaluates
sensorineural hearing and/or CN VIII damage
Rinne’s test evaluates
bone conduction vs air conduction
The vestibule provides
linear acceleration
the semmicircular canals provide
angular acceleration
the cochlea provides
sound