The olfactory mucosa is the neuroepithelial mucosa[1] lining the roof and upper parts of the septum and lateral wall of the nasal cavity[1][2] which contains bipolar neurons of the primary receptor neurons of the olfactory pathway, as well as supporting cells.
The neurons' dendrites project towards the nasal cavity while their axons ascend through the cribriform plate[1] as the olfactory nerves.
[7] Electron microscopy studies show that Bowman's glands contain cells with large secretory vesicles.
[8] The exact composition of the secretions from Bowman's glands is unclear, but there is evidence that they produce odorant binding protein.
A study in 2008 in mice has shown that the level of CB1 expression in various brain regions, including the olfactory nucleus, is modulated by diet-induced obesity.