CN III (OCCULOMOTOR)-B. ORIGIN
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Revision as of 12:35, 26 March 2023 by Dr Appukutty Manickam (talk | contribs) (Imported from text file)
SUMMARY
1. The occulomotor nucleus lies near the midline in the periaqueductal grey mater, at the level of superior colliculus.
2. Two components: somatic (motor to the striated extraocular muscles) & visceral/parasympathetic (motor to the smooth muscle, levator palpebrae superioris).
3. The visceral/parasympathetic component → Edinger-Westphal nucleus lies cranial to the occulomotor nucleus.
4. The fibers (24,000) traverse the midbrain with a lateral convexity and pass through the red nucleus & substantia nigra.
Reference(s)
R.M.H McMinn (1998). Last’s anatomy: regional and applied. Edinburgh: Churchill Livingstone. Get it on Amazon.
Drake, Richard L., et al. Gray's Anatomy for Students. Elsevier, 2023. Get it on Amazon.
