olfactory nerve

olfactory nerve   n.  Either of the first pair of cranial nerves that conduct impulses from the mucous membranes of the nose to the olfactory bulb.

Main Entry: olfactory nerve
Function: noun
: either of the pair of nerves that are the first cranial nerves, that serve to conduct sensory stimuli from the olfactoryorgan to the brain, and that arise from the olfactory cells as discrete bundles of unmyelinated fibers passing in small groups (in humans, about 20) through the cribriform plate of the ethmoid bone andterminating in the olfactory bulb called also first cranial nerve

olfactory nerve n.
Any of numerous olfactory filaments in the olfactory portion of the nasal mucosa that enter the olfactory bulb, where they terminate in synaptic contact with mitral cells, tufted cells, and granule cells. Also called first cranial nerve.

olfactory nerve   Either of the first pair of cranial nerves that carries sensory information relating to smell from the nose to the brain.