Olfactory nerve

5a. The Olfactory Nerves
FIG. 771- Nerves of septum of nose. Right side. (See enlarged image)
FIG. 772- Plan of olfactory neurons. (See enlarged image) ...

Olfactory sensory neurons project axons to the brain within the olfactory nerve, (cranial nerve I).

Some of the cranial nerves are "mixed", containing both sensory and motor axons
Some, e.g., the optic and olfactory nerves (numbers I and II) contain sensory axons only
Some, e.g. number III that controls eyeball muscles, contain motor axons only.

See also: Human, Cells, Olfactory, Trans, Lateral