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Neuromuscular: Cranial Nerve Afferents, Efferents, Testing

Cranial NerveAfferent (Sensory)Efferent (Motor)Test
olfactory (CN I) smell identify familiar odors
optic (CN II) sight test visual fields and visual acuity
oculomotor (CN III) voluntary: levator of eyelid; superior, medial and inferior recti, inferior oblique muscle of eyeball. autonomic: smooth muscle of eyeball upward, downward, and medial gaze reaction to light
trochlear (CN IV) voluntary: superior oblique muscle of eyeball downward and inward gaze
trigeminal (CN V) touch and pain of skin of face, mucous membrane of nose, sinuses, mouth, anterior tongue voluntary: muscles of mastication corneal reflex face sensation clench teeth and push down on chin to separate jaw
abducens (CN VI) voluntary: lateral rectus muscle of eyeball lateral gaze
facial (CN VII) taste on anterior tongue voluntary: facial muscles autonomic: lacrimal, submandibular, and sublingual glands close eyes tight smile and show teeth whistle and puff cheeks identify familiar tastes
vestibulocochlear (CN VIII) hearing and balance hearing tests balance and coordination tests
glossopharyngeal (CN IX) touch and pain in posterior tongue, pharynx taste on posterior tongue voluntary: pharynx muscle autonomic: parotid gland gag reflex ability to swallow
vagus (CN X) touch and pain in pharynx, larynx, and bronchii taste on tongue and epiglottis voluntary:muscles of palate, pharynx and larynx autonomic: thoracic and abdominal viscera gag reflex ability to swallow say "ahh"
accessory (CN XI) voluntary: sternocleidomastoid and trapezius resisted shoulder shrug
hypoglossal (CN XII) voluntary: muscles of tongue tongue protrusion
Created by: saram6450
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