Cranial Nerve Assessment Flashcards
CN 1
Olfactory
Sensory (Afferent)
Olfaction
CN 2
Optic
Sensory (Afferent)
Vision
CN III
Oculomotor
Motor (Efferent)
Turns Eye UDI
Constricts pupil
Accommodates Lens
CN IV
Trochlear
Motor
Intorsion of the Eye
CN V
Trigeminal
Both
Face sensation
Cornea sensation
Anterior tongue sensation
Muscles of mastication
Dampens sound (Tensor Tympani)
CN VI
Abducens
Motor (Efferent)
Turns Eye out
CN VII
Facial
Both
Ant. tongue taste
Facial expression
Dampens sound (stapedius)
Tearing (lacrimal gland)
Salivation (submandibular & sublingual glands)
CN VIII
Auditory/Vestibulocochlear
Sensory
Balance (Semicircular canals, utricle, sacule)
Hearing (organ of Corti)
CN IX
Glossopharyngeal
Both
Post. tongue taste
Post. tounge sensation
Oropharynx sensation
Salivation (Parotid gland)
CN X
Vagus
Both
Thoracic and abd viscera
Larynx and Pharynx
Decrease HR
Increase GI motility
CN XI
Spinal Accessory
Motor (Efferent)
Head movements (SCM & Trapz)
CN XII
Hypoglossal
Motor (Efferent)
Tongue shapes & movement
Examine olfactory acuity using non-noxious such as lemon oil, coffee, cloves, or tobacco.
CN 1
Examine visual activity using a Snellen Chart; both central and peripheral vision is tested.
CN 2
Determine equality and size of pupils, reaction to light, presence of strabismus (loss of ocular alignment), ability of eyes to follow a moving target without head movement, presence of ptosis of eyelid.
CN 3, 4, 6
Sensory tests of face (sharp/dull discrimination, light touch); open and close jaw against resistance, jaw jerk reflex,
CN 5
Examine any asymmetry of face at rest during voluntary contraction.
CN 7
Test auditory acuity using a vibrating tuning fork (Weber Test) place on vertex of skull or forehead, rub fingers together at distance and gradually bring toward patient, note distance when first heard; alter volume of conversation
CN 8
Test auditory acuity using a vibrating tuning fork (Weber Test) place on vertex of skull or forehead, rub fingers together at distance and gradually bring toward patient, note distance when first heard; alter volume of conversation
CN 8
Special Test: Vibrating tuning for placed on mastoid process, then near external ear canal, note hearing acuity.
Rinne’s Test
Special Test: Test auditory acuity using a vibrating tuning fork placed on the vertex of the skull or forehead.
Weber’s Test
Examine the taste on the posterior one-third of the tongue, and examine gag reflex.
CN 9
Examine swallowing; observe the uvula and soft palate for any asymmetry (tongue depressor).
CN 10
Examine strength of the sternocleidomastoid and trapezius muscles.
CN 11
With the tongue protruded, examine the ability to move the tongue rapidly from side to side.
CN 12
