It does not originate within nuclei of the diencephalons or brain stem and instead is the only cranial nerve that is attached directly to the cerebrum.  
At one end, it forms a plexiform network that is collected into about twenty branches that then pass through the cribriform plate of the ethmoid bone.  It terminates in several small branches that ramify in the soft mucous membrane.  It does not originate within nuclei of the diencephalons or brain stem and instead is the only cranial nerve that is attached directly to the cerebrum.  Having a special sensory function, FTP, name this first cranial nerve, the one associated with smell.
At one end, it forms a plexiform network that is collected into about twenty branches that then pass through the cribriform plate of the ethmoid bone.  
olfactory nerve (accept early buzz of cranial nerve I)