<prompt> Which cranial nerve has the largest intracranial course?Vagus nerveOculomotor nerveTrochlear nerveAbducens nerve  <response>: Ans. C Trochlear nerveRef: BDC 6th ed. Vol-III pg. 362 Trochlear nerve is the only cranial nerve to emerge dorsally from the brain stem. It has the longest intracranial course and it is the most slender cranial nerve in terms of axon contents. Largest cranial nerve: Trigeminal N. CN 5th CN which has most extensive distribution beyond head and neck: Vagus Nerve CN 10th. Most frequently paralyzed CN: Facial Nerve CN 7th- due to wide intraosseous course. Pure sensory CN: CN 1, 2, 8 Pure motor CN: CN 3, 4, 6, 11, 12 Mixed CN: CN 5, 7, 9, 10 