Olfaction chemosensory neurons

Rachman, N. J. (1980b) A possible role for the salt-sensitive chemosensory neurons in the recognition and acceptance of protein sources by female blowflies Phormia regina). In Olfaction and Taste, Vol. VII (van der Starre, H., ed.)p. 425. Information Retrieval, London. 

Meredith M. (1982). Stimulus access and other processes involved in nasal chemosensory function potential substrates for neuronal and hormonal influence. In Olfaction and Endocrine Regulation (Breipohl W., ed.). IRL Press, London, pp. 223-248. 

The sensitivity and selectivity of olfaction and contact chemosensation are due (1) in the brain, to the existence of a neuronal network of neurons tuned to a specific chemical stimulus, and (2) in the periphery, to the existence of olfactory/ chemosensory receptor neurons housed in sensory microorgans called sensilla. The sensilla can best be viewed as simple cuticular porous extrusions that increase the surface that captures airborne odorants or chemicals dissolved in water droplets. They contain the receptive olfactory or chemosensory structures (Schneider, 1969). The olfactory sensilla are most numerous on the antennae and mediate the reception of sex pheromones and plant volatiles, as well as other odorants. Low volatility pheromones may also be detected by contact chemoreceptors on... 

Vertebrates possess three primary chemosensory systems gustation ( taste ), trigeminal, and olfaction ( smell ) but only one of these, the olfactory system, mediates responses to pheromones. Chemicals that stimulate the olfactory system are known as odorants and comprise one type of biological cue (any entity that stimulates a sensory system). Bouquets of odorants that can be discriminated as specific entities are termed odors. The olfactory system contains olfactory receptor neurons (ORNs) that comprise cranial nerve I and project directly to the forebrain. ORNs are now known to express only one to a few olfactory receptor proteins ( receptors ), which means that the chemoreceptive range of each neuron can be very narrow. The olfactory system also has several subcomponents including the vomeronasal organ, which is described below. 

Ache BW, Young JM (2005) Olfaction diverse species, conserved principles. Neuron 48 417 130 Awasaki T, Kimura K (1997) Pox-neuro is required for development of chemosensory bristles in Drosophila. J Neurobiol 32 707-721... 

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