00:03 Cranial nerve III or ocular motor, it's going to have origin or what we call nucleus back in the brainstem, most of it's going to be in the midbrain. 00:16 And then, it's going to pass through the lateral wall of something called the cavernous sinus. 00:24 Before it travels through the superior orbital fissure and through the common tendinous ring at the back of the orbit where many of the extra ocular muscles attach. 00:38 Once it's in the orbit, it's going to give off several branches going off to extra ocular muscles, and a muscle that goes to the upper eyelid called the levator palpebrae superioris.
The lecture Oculomotor Nerve (CN III) by Darren Salmi, MD, MS is from the course Neurovasculature of the Head.
Where does cranial nerve III begin?
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