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Cranial Nerves

Anatomy

QuestionAnswer
I Olfactory Function: special sensory Source/Target: olfactory epithelium
II Optic Function: special sensory Source/Target: retina of eye
III Oculomotor Function: motor Source/Target: 4 extrinsic muscles of eye
IV Trochlear Function: motor Source/Target: 1 extrinsic muscle of eye
V1 Ophthalmic Function: sensory Source/Target: skin- upper 1/3 of face
V2 Maxillary Function: sensory Source/Target: skin- middle 1/3 of face, teeth
V3 Mandibular Function: sensory Source/Target: skin- lower 1/3 of face, teeth, tongue Function: motor Source/Target: 3 muscles of mastication
VI Abducens Function: motor Source/Target: 1 extrinsic muscle of eye
VII Facial Function:motor Source/Target: muscles of facial expression Function: special sensory Source/Target: taste of anterior 2/3 of tongue
VIII Vestibulocochlear Function: special sensory Source/Target: inner ear (cochlea & vestibular apparatus)
IX Glossopharyngeal Function: special sensory Source/Target: taste on posterior 1/3 of tongue Function: motor Source/Target: muscles of pharynx
X Vagus Function: sensory Source/Target: skin of throat +external ear canal Function: special sensory Source/Target: gag reflex (chemical) Function: motor Source/Target: muscles of pharynx & gut
XI Accessory Function: motor Source/Target: muscles of pharynx, trapezius, sternocleidomastoid
XII Hypoglossal Function: motor Source/Target: muscles of the tongue
Created by: abbiemech