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CN Nuclei, Fxn, Decussation, Skull Exit

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Brainstem Nuclei
Classification
CN
Function
Decussation
Exit from Skull
Edinger-Westphal Nucleus   GVE   CN III   Pupil Constriction, Ciliary Muscles   Ipsilateral   Superior Orbital Fissure  
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Oculomotor Nucleus   GSE   CN III   Levator palpebrae superior, medial rectus, inferior rectus, superior rectus, inferior oblique   Ipsilateral   Superior Orbital Fissure  
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Trochlear Nucleus   GSE   CN IV   Superior Oblique   Contralateral   Superior Orbital Fissure  
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Trigeminal Motor Nucleus   SVE   CN V   Muscles of mastication and tensor tympani muscle   Bilateral   Foramen Ovale  
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Superior Salivatory Nucleus   GVE   CN VII   Lacrimal glands, submaxillary gland, submandibular gland   Ipsilateral   (1)Internal auditory meatus, (2) greater petrosal - pterygoid canal, (3) chorda tympani - petrotympanic fissure  
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Facial Nucleus   SVE   CN VII   Muscles of facial expression, stapedius muscle, and part of digastric muscle   top 1/2 - bilateral, lower 1/2 -contralateral   internal auditory meatus and stylomastoid foramen  
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Abducens Nucleus   GSE   CN VI   Lateral rectus   Ipsilateral   Superior Orbital Fissure  
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Inferior Salivatory Nucleus   GVE   CN IX   Parotid gland   Ipsilateral   (1) Jugular foramen, (2) Lesser Petrosal Foramen, (3) Forman Ovale  
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Nucleus Ambiguus   SVE   CN IX, X   Taste   Bilateral   Jugular Foramen  
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Hypoglossal Nucleus   GSE   CN XII   Muscles of tongue   Contralateral   Hypoglossal Foramen  
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Spinal Accessory Nucleus   SVE   CN XI   Sternomastoid and upper trapezius muscles   Contralateral (Crosses with Corticospinal)   Jugular Foramen  
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Trigeminal Nucleus   GSA   CN V, VII, IX, X   Touch, pain, temperature, position, and vibration sense for face, sinuses, and meninges   Contralateral   Different for each CN  
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Vestibular Nucleus   SSA   CN VIII   Vestibular Sensation   Bilateral   Interal Auditory Meatus  
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Dorsal and Ventral Cochlear Nuclei   SSA   CN VII   Hearing   Bilateral   Internal Auditory Meatus  
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Nucleus Solitarius, Rostral Position   SVA   CN VII, IX, X   Taste   Different for each CN   Different for each CN  
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Nucleus Solitarius, Caudal Position   GVA   CN IX, X   Chemo and Baroreceptors of Carotid Body (IX) and Aortic Arch (X)   Ipsilateral (IX), Bilateral (X)   Jugular Foramen  
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Created by: marcie
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