The proteins and molecular effectors utilized
in the insect chemosensory system are the same in olfaction
and gustation. For illustrative purposes the following series
of diagrams will outline the events and molecules involved
in insect olfaction. In this particular case, the insect in
question is a mosquito.
Key chemosensory organs are the antennae, the maxillary palps,
and the labial palps, highlighted in the diagram. It is within
these tissues that the processes responsible for recognizing
an external stimulus – such as an odor molecule from
the environment – take place. These organs have chemosensory
bristles on their surfaces.
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