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Cranial Nerves

NumberNameOriginTerminationFunctionSensory, Motor, Or Both
I Olfactory Epithelium of nasal cavities Olfactory Bulb smell Special Sensory
II Optic Retina of eye Thalamus and Optical Cortex sight Special Sensory
III Oculomotor Midbrain Eye motor to muscles that move the eye, constrictor pupillae, ciliary musdcles Somatic Motor- innervates 4 of 6 extraocular muscles, Visceral Motor- parasympathetic, innervates constrictor pupillae and ciliary muscles
IV Trochlear Midbrain Eye Motor to muscles that move the eye Somatic Motor- innervates one extraocular muscle
V Trigeminal Pons Mandible, maxillary, eye motor to muscles of mastication, tensor tympani and tensor veli palatini. Sensory from the majority of the head and neck including the teeth and gingival SOmatic Sensory- receive impulses from face and head, carry impulses of pain, touch and temp, proprioception. Branchial Motor- fibers to muscles of mastification, tensor tympani, tensor palatini
VI Abducens Inferior region of Pons Lateral rectus muscle of eye Motor to muscles that move the eye (laterally) Somatic Motor- motor to one extraocular muscle
VII Facial Pons face and tongue motor to muscles of facial expression, motor to glands in head (lacrimal, submandibular nasal, pharyngeal), sensory from small areas of skin of earlobe and ear, sensory from blood vessesl, glands, receptors in nose, palate, ORAL CAVITY, taste from anterio Motor- branchial & visceral, Sensory- somatic, visceral and special
VIII Vestibulochochlear Inner ear hearing and equilibrium apparatus pons Sense of balance and hearing, sensory receptors in inner ear Special Sensory
IX Glossopharyngeal Medulla Throat Motor to stylopharyngeus, parotid gland, sensory from small area of eardrum, auditory meatus, pinna of ear, Sensory from receptors in ear, pharynx, carotid body, Taste from posterior 1/3 of tongue, Swallowing, salivary gland secretion, taste Motor- branchial, visceral, Sensory- special, somatic, visceral
X Vagus Medulla Thorax and Abdomen Motor to soft palate, pharynx, larynx, Motor to GI, thorax, abdomen, Sensory from ear drum, external auditory meatus, pinna of ear, Sensory from general visceral organs, taste from epiglottis Motor- branchial, visceral, Sensory- special, somatic, visceral
XI Accessory Medulla & Superior aspect of spinal cord Muscles of neck and back Motor to muscles of the larynx, pharynx, sternocleidomastoid, and trapezius Branchial Motor- motor to trapezius, sternomastoid, muscles of the larynx
XII Hypoglossal Medulla Tongue Motor to move the tongue Somatic Motor- to all intrinsic and majority of the extrinsic muscles of the tongue
Created by: PRO Teacher JohnW
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