Cranial Nerves

CN which is the smallest -- olfactory n. CN which enters cerebrum directly - olfactory nerve CN with longest intracranial (subarachnoid) course -- trochlear n CN which emerges posterior to brain stem- trochlear nerve CN with dorsal exit -- trochlear n. CN which is the largest and thickest -- trigeminal n. CN which is largest -- trigeminal nerve CN with longest extracranial course --vagus n. CN having longest intraosseous course -- facial nerve CN with longest  intradural course - abducent nerve CN passing through cavernous sinus -- abducent nerve CN involved in raised intracranial tension -- abducent nerve  Abducent nerve has the longest intra-cranial INTRADURAL course!! Thickest nerve is SCIATIC nerve Thickest cutaneous nerve is GREATER OCCIPITAL nerve Labourer’s nerve-median nerve Dentist’s nerve-inferior alveolar nerve Alderman’s nerve-auricular branch of vagus nerve Nerve of laterjet-largest gastric branch of vagus nerve CN with longest intracranial course -- trochlear n. CN with longest extracranial course --vagus- Longest nerve:CN X (Vagus) which reaches from the medulla to the digestive and urinary organs    CN which is the largest and thickest -- trigeminal n. CN with dorsal exit -- trochlear n. CN which is the smallest -- olfactory n.

Longest course within the skull is the trochlear, while Largest is trigeminal, longest outside skull is vagus-from medulla to digestive and urinary organs