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Cranial Nerves

Learn the twelve cranial nerves and their functions.
a data set by Bass
created November 11, 2016
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FAMILY TREE
Cranial NerveFunctionPicture
CN I - Olfactory nerveSensory; smell
CN II - Optic nerveSensory; vision
CN III - Oculomotor nerveMotor: ciliary muscles, sphincter of pupil, all extrinsic muscles of eye except those listed for CN IV and VI.
IV - Trochlear nerveMotor; superior oblique muscle of eye
V - Trigeminal nerveMotor; muscles of mastication, the tensor tympani, tensor veli palatini, mylohyoid and the anterior belly of the digastric.
VI - Abducens nerveMotor; lateral rectus muscle of eye
VII - Facial nerveMotor; muscles of facial expressions, Special sensory taste fibers for the anterior 2/3 of the tongue
VIII - Vestibulocochlear nerveSensory; orientation, motion, and hearing
IX - Glossopharyngeal nerveSensory; tonsils, the pharynx, the middle ear and the posterior 1/3 of the tongue (taste) from the posterior one-third of the tongue. Motor; stylopharyngeus, parotid gland.
X - Vagus nerveMotor; palate, pharynx, larynx, trachea, bronchial tree, heart, GI tract to left colic flexure. Sensory; pharynx, larynx, reflex sensory from tracheobronchial tree, lungs, heart, GI tract to left colic flexure
XI - Spinal Accessory nerveMotor; sternocleidomastoid and trapezius
XII - Hypoglossal nerveMotor; all intrinsic and extrinsic muscles of tongue (excluding palatoglossus-a palatine muscle)
Ready to learn about Cranial Nerves?