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Cranial Nerves
| Question | Answer |
|---|---|
| goes through cribiform plate of ethmoid bone | olfactory |
| goes through optic canal | optic |
| goes through superior orbital fissure | oculomotor, trochlear, trigeminal (V1), abducens |
| goes through foramen rotundum | trigeminal (V2) |
| goes through foramen ovale | trigeminal (V3) |
| goes through auditory canal | facial and vestibulocochlear |
| goes through jugular foramen | glossopharyngeal, vagus, spinal accessory |
| goes through hypoglossal foramen | hypoglossal |
| axons transverse cribiform plate of ethmoid bone, travels from bulbs via tracts to sulcus to reach processing centers, sensory | olfactory |
| carries visual info from retina back to brain, portion of visual pathway beyond this is referred to as the optic tract, sensory, nerves cross | optic |
| innervation to extraocular eye muscles, motor | oculomotor |
| motor innervation to lateral rectus m. | abducens |
| motor innervation to superior oblique m. | trochlear |
| has 3 branches, exits the brainstem and enters a small fossa just post. and inferolateral to the cavernous sinus called "Meckel's cave" | trigeminal |
| division of trigeminal; sensory; enters the orbit; branches are supraorbital and supratrochlear nerves, infratrochlear n., and lacrimal n. | opthalamic (V1) |
| division of trigeminal; sensory; distributes sensory branches to orbit, nasal cavity, pharynx, and oral cavity | maxillary (V2) |
| division of trigeminal; sensory and motor; mucous membrane and floor of oral cavity, external ear, lower lip, chin, ant. 2/3 of tongue, lower teeth, gingiva, muscles of mastication | mandibular (V3) |
| sensory and motor, travels in the auditory canal alongside vestibulocochlear, takes a turn into facial canal in temporal bone and eventually exits via stylomastoid foramen, muscles of facial expression, chorda tympani is branch, 5 branches, stapedius m. | facial |
| temporal, zygomatic, buccal, mandibular, cervical | branches of facial |
| sensory, enters int. auditory meatus with facial and travels in auditory canal of temporal bone to reach cochlea and vestibular organs, balance and hearing, branches are cochlear n. and vestibular n. | vestibulocochlear |
| sensation for post. tongue and pharynx, motor portion supplies stylopharyngeus m., innervates parotid gland, taste for post. 1/3 of tongue | glossopharyngeal |
| sensory and motor; largest portion innervates heart, lungs, and digestive tract; motor compartment controls nearly all pharyngeal and upper esophageal muscles and all muscles of larynx via recurrent laryngeal a. | vagus |
| motor, does not arise from brainstem but rather upper 5 or 6 segments of spinal cord, motor innervation to sternocleidomastoid and trapezius | spinal accessory |
| motor, provides innervation to almost all intrinsic and extrinsic muscles of tongue and intrinsic musculature of larynx | hypoglossal |
| which travels through two foramina in cranial fossa | spinal accessory |
| which has the longest length and comes from post. brainstem | trochlear |
| travels ant. to olive on medulla oblongata | hypoglossal |
| responsible for feeling temp. on ant. part of tongue | mandibular (V3) |
| gag reflex and sensation on post. aspect of tongue | glossopharyngeal |
| lesion causes hoarseness and loss of sensation to mucosa of infraglottic space | vagus |
Created by:
emma.scarmon-coyotes
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