Which of the following nerves would be unaffected by this condition?

A 57-year-old man comes to a local hospital with fever, headache, nausea, and vomiting.
Laboratory tests reveal an infection, and radiologic examination localizes the
infection to the cavernous sinus. Which of the following nerves would be unaffected by
this condition?

(A) Oculomotor nerves
(B) Abducens nerves
© Trochlear nerves
(D) Mandibular nerves
(E) Ophthalmic nerves

The answer is D. The mandibular division of the trigeminal nerve does not lie in the wall
of the cavernous sinus, whereas the oculomotor, abducens, trochlear, and ophthalmic
nerves do.