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when we eat we normally taste and smell the food simultaneously. in order for the substance...

when we eat we normally taste and smell the food simultaneously. in order for the substance to be smelled in your nose, it must be:
Science   Anatomy-And-Physiology   
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Answer #1

In order for the substance to be smelled inyou nose, it must be BINDING TO THE OLFACTORY RECEPTOR PROTEIN EXTENDING FROM THE CILIA of the nose & hence acting as chemical stimulus.

Olfactory receptor cells are the neurons present in the olfactory epithelium. The chemical stimulus generate the action potential and this travel through the olfactory nerve through olfactory bult to primary olfactory cortex in the brain and then to secondary olfactory cortex.  

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