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Cranial Nerve I: Olfactory
Afferent (Sensory): smell
Efferent (motor): None
Test: Identify familiar odors (e.g. chocolate, coffee)
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Cranial Nerve II: Optic
Afferent (Sensory): Sight
Efferent (Motor): None
Test: Test visual field
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Cranial Nerve III: Oculomotor
Afferent (Sensory): None
- Efferent (Motor): Voluntary motor: levator of eyelid; superior, medial, and inferior recti; inferior oblique muscle of eyeball
- Autonomic: Smooth muscle of eyeball
- Test: Upward, downward, and medial gaze
- Reaction to light
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Cranial Nerve IV: Trochlear
Afferent (Sensory): None
Efferent (motor): Voluntary motor- Superior oblique muscle of eyeball
Test: Downward and lateral gaze
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Cranial Nerve V: Trigeminal
Afferent (Sensory): Touch, pain: skin of face, mucous membranes of nose, sinuses, mouth, anterior tongue
Efferent (motor): muscles of mastication
Test: Corneal reflex, Face sensation, Clench teeth; push down on chin to separate jaws
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Cranial Nerve VI: Abducens
Afferent (Sensory): None
Efferent (Motor): Lateral rectus muscle of eyeball
Test: Lateral gaze
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Cranial Nerve VII: Facial
Afferent (Sensory): Taste- anterior tongue
- Efferent (Motor): Facial Muscle
- Autonomic- Lacrimal, submandibular, and sublingual gland
Test - Close eyes tight, smile and show teeth, whistle and puff cheeks, Identify familiar tastes (e.g. sweet, sour)
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Cranial Nerve VIII: Vestibulocochlear
Afferent (Sensory): Hearing, Balance
Efferent (Motor): None
Test: Hear watch tick, hearing test, balance and coordination
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Cranial Nerve IX: Glossopharyngeal
Afferent
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