OCCULOMOTOR (III) NERVE Q. 1 Nerve compressed by aneurysm of posterior communicating artery is A Occulomotor nerve B Optic nerve C Hypophysis cerebri D Trochlear nerve Q. 1 Nerve compressed by aneurysm of posterior communicating artery is A Occulomotor nerve B Optic nerve C Hypophysis cerebri D Trochlear nerve Ans. A Explanation: Occulomotor nerve [Ref: […]
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OCCULOMOTOR (III) NERVE OCCULOMOTOR NERVE This is purely motor (somatic motor) nerve. STRUCTURE: Midbrain ↓ Third nerve nucleus( at the level of the superior colliculus ventral to the cerebral aqueduct, on the pre-aqueductal grey matter) ↓ Red Nucleus ↓ Substantia Nigra ↓ Exit through Interpeduncular fossa ↓ Invested with a sheath of pia mater ↓ Passes between the superior cerebellar & posterior cerebral arteries
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