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CN Nuclei, Fxn

CN Nuclei, Fxn, Decussation, Skull Exit

Brainstem NucleiClassificationCNFunctionDecussationExit from Skull
Edinger-Westphal Nucleus GVE CN III Pupil Constriction, Ciliary Muscles Ipsilateral Superior Orbital Fissure
Oculomotor Nucleus GSE CN III Levator palpebrae superior, medial rectus, inferior rectus, superior rectus, inferior oblique Ipsilateral Superior Orbital Fissure
Trochlear Nucleus GSE CN IV Superior Oblique Contralateral Superior Orbital Fissure
Trigeminal Motor Nucleus SVE CN V Muscles of mastication and tensor tympani muscle Bilateral Foramen Ovale
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
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
Abducens Nucleus GSE CN VI Lateral rectus Ipsilateral Superior Orbital Fissure
Inferior Salivatory Nucleus GVE CN IX Parotid gland Ipsilateral (1) Jugular foramen, (2) Lesser Petrosal Foramen, (3) Forman Ovale
Nucleus Ambiguus SVE CN IX, X Taste Bilateral Jugular Foramen
Hypoglossal Nucleus GSE CN XII Muscles of tongue Contralateral Hypoglossal Foramen
Spinal Accessory Nucleus SVE CN XI Sternomastoid and upper trapezius muscles Contralateral (Crosses with Corticospinal) Jugular Foramen
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
Vestibular Nucleus SSA CN VIII Vestibular Sensation Bilateral Interal Auditory Meatus
Dorsal and Ventral Cochlear Nuclei SSA CN VII Hearing Bilateral Internal Auditory Meatus
Nucleus Solitarius, Rostral Position SVA CN VII, IX, X Taste Different for each CN Different for each CN
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
Created by: marcie