Nerve, oculomotor: The oculomotor nerve is the third cranial nerve. (The cranial nerves emerge from or enter the cranium, the skull, as opposed to the spinal nerves which emerge from the vertebral column).
The oculomotor nerve is responsible for the nerve supply to muscles about the eye:
Paralysis of the oculomotor nerve results in drooping eyelid (ptosis), deviation of the eyeball outward (and therefore double vision) and a dilated (wide-open) pupil.
The third, fourth, and sixth cranial nerves innervate the extraocular muscles that position the globes in the orbits.
CN III. Oculomotor Nerve The oculomotor nerve originates from motor neurons in the oculomotor (somatomotor) and Edinger-Westphal (visceral motor) nuclei in the brainstem.
5c. The Oculomotor Nerve - Human Anatomy ... The oculomotor nerve (Figs. 775, 776, 777) supplies somatic motor fibers to all the ocular muscles, except the Obliquus superior ...
Dysfunction of the third cranial nerve (oculomotor nerve) can result from lesions anywhere along its path between the oculomotor nucleus in the midbrain and the ...
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