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Pathway of CN I: Olfactory Nerve
- SA fibers
- From the nasal mucosa in the roof of the nasal cavity --> through the cribiform plate --> to the olfactory bulb on the surface of the cribiform plate --> to the frontal and temporal lobes
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Pathway of CN II: Optic Nerve
- SA fibers
- from ganglia cells in the retina --> travel throughout system via optic canal of sphenoid --> terminates in the thalamus
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Pathway of CN III: Oculomotor Nerve
- GSE and GVE fibers
- Both fiber types originate in the brain stem and pass through the superior orbital fissure, where they then split:
- GSE: supplies the levator pappebrae superioris, superior rectus, inferior rectus, medial rectus, and inferior oblique
- GVE: passes through the ciliary region to supply the sphincter papillae muscles and the ciliary muscles
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Pathway of CN IV: Trochlear Nerve
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