Which of the following is NOT associated with the cavernous sinus?

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Optic nerve (cranial nerve II)Trochlear nerve (cranial nerve IV)Abducens nerve (cranial nerve VI)Mandibular branch of the trigeminal nerve

Explanation

The optic nerve (cranial nerve II) does not pass through the cavernous sinus, whereas the trochlear nerve (IV), abducens nerve (VI), and the mandibular division of the trigeminal nerve are all closely related to or pass near the cavernous sinus.