quizlet what is false concerning the sense of smell? question 7 options: the binding of an odorant to a receptor protein in the olfactory hair cell triggers second messengers to amplify the signal. a minute (very small) quantity of an odorant can trigger the olfactory pathway to elicit the sensation of smell. the olfactory system evolved into the limbic system, which controls emotions. cell bodies of mitral cells, tufted cells, and granule cells reside in the olfactory bulb. central processes of bipolar olfactory neurons travel through the internal acoustic meatus.