Olfactory glands (Bowman glands) lie beneath the olfactory epithelium and release a watery secretion onto its surface. This mucus dissolves odour molecules so receptors can detect them.
| Location | Lamina propria beneath the olfactory epithelium in the roof of the nasal cavity |
|---|---|
| Parts |
|
| Nerve Supply | Nasal branches of the pterygopalatine ganglion (parasympathetic) |
| Blood Supply | Ethmoidal and sphenopalatine arteries |
Keep the olfactory surface moist, dissolve odorants and flush them away so new smells can be detected.
Dryness of the nasal lining, for example from some medicines or ageing, can reduce smell. Their secretions contain odorant-binding proteins and protective substances.
Reduced smell when the olfactory surface is too dry.
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