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Cranial Nerves 2

DANENG: Cranial Nerves (pathways)

Olfactory (I) olfactory epithelium - cribriform plate of ethmoid bone - olfactory bulb - primary olfactory cortex
Optic (II) retina - optic canals - partial decussation at optic chiasm - optic tracts - thalamus ( - optic radiation fibers - primary visual cortex)
Oculomotor (III) ventral midbrain - superior orbital fissures - 4 of 6 extrinsic eye muscles (per eye)
Trochlear (IV) dorsal midbrain - superior orbital fissures - superior oblique muscles
Trigeminal (V) V1: face - superior orbital fissure - pons<br>V2: face - foramen rotundum - pons<br>V3: face - foramen ovale - pons
Abducens (VI) inferior pons - superior orbital fissures - lateral rectus muscles
Facial (VII) pons - internal acoustic meatus - stylomastoid foramen - lateral aspect of face - separates into 5 branches:<br> 1. temporal<br> 2. zygomatic<br> 3. buccal<br> 4. mandibular<br> 5. cervical
Vestibulocochlear (VIII) inner ear - internal acoustic meatus - pons/medulla border
Glossopharyngeal (IX) medulla - jugular foramen - throat
Vagus (X) medulla - jugular foramen - all over
Accessory (XI) cranial root: medulla - joins with spinal root - jugular foramen<br>spinal root: cervical spine - foramen magnum - joins with cranial root - jugular foramen
Hypoglossal (XII) medulla - hypoglossal canal - tongue
Created by: deng