Olfactory system - illustration

Human olfactory system.
1: Olfactory bulb
2: Mitral cells
3: Bone
4: Nasal epithelium
5: Glomerulus
6: Olfactory receptor cells

Illustration courtesy of Wikimedia Commons and user Chabacano. This file is licensed under the Creative Commons Attribution ShareAlike 2.5 License. In short: you are free to share and make derivative works of the file under the conditions that you appropriately attribute it, and that you distribute it only under a license identical to this one.