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Sources and Destinations of cranial nerves I-XII

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Cranial Nerve Number
Afferent Source
Motor destination
Parasympathetic destination
Name
Function
IV   NA   Superior oblique   NA   Trochlear   Eye movement  
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V   Front 2/3 of head, general sensory from anterior 2/3 of tongue   masticatory muscles, tensor tympani of middle ear   NA   Trigeminal   Spinal nerve for face, chewing muscles  
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VI   NA   Lateral rectus   NA   Abducens   Eye movement  
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VII   External ear, gustatory from anterior 2/3 of tongue   facial muscles, stapedius of middle ear   submandibular and sublingual salivary glands; lacrimal glands   Facial   Taste, facial expression  
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VIII   Spiral and vestibular ganglia of inner ear, to cochlear and vestibular nuclei of pons   NA   NA   Vestibulocochlear   Vestibular, Auditory  
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IX   External ear, pharynx, sensory and taste from posterior 1/3 of tongue, carotid sinus blood pressure, carotid body CO2-O2 balance   Pharyngeal muscles   parotid salivary gland   Glossopharyngeal   Taste, sensory and motor of pharynx  
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X   External ear, taste from epiglottis, thoracic and abdominal viscera, mucous membranes of larynx and pharynx   Laryngeal and pharyngeal muscles,   thoracic and abdominal viscera   Vagus   Parasympathetic: breathing, heart rate, respiration, some pharynx and larynx  
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XI   NA   Laryngeal muscles, sternocleidomastoid, trapezius   NA   Accessory   Upper back muscles, larynx  
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XII   NA   muscles of tongue   NA   Hypoglossal   Tongue muscles  
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I   Olfactory mucosa   NA   NA   Olfactory   Smell  
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II   Retina   NA   NA   Optic   Vision  
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III   NA   Inferior oblique, Medial rectus, Superior rectus, Inferior rectus, levator palpebrae superioris   via ciliary ganglion to iris sphincter muscles and lens ciliary muscles   Oculomotor   Eye movement  
🗑


   

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Created by: RSussman
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