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I — Olfactory nerve

Nervus olfactorius (I) · I — čichový nerv

Nervous system

Looks like

Bundles of very fine nerve fibres passing from the roof of the nose through the ethmoid sieve plate to the olfactory bulbs.

What it does

Carries the sense of smell, which gives much of flavour.

Keeping it well

Lost after viral infections and head injury; smell training helps some recover. Gradual smell loss can be an early sign of Parkinson's disease.

Its parts

Related conditions