Olfactory nerve is a nerve of special sense for smell. It consists of fibers which are the axons of the olfactory cells in the olfactory part of the nasal mucous membrane.
The fibres are non-medullated and are collected into small bundles enclosed in sheaths furnished by the meninges of the brain; pass through the cribriform plate of the ethmoid and join the convex face of the olfactory bulb.