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Which sense organ not relayed through hypothalamus |
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Answer» discussed in a previous blog on the sense of taste, smell is one of our two chemical senses. Our olfactory RECEPTORS transform chemical signals—primarily from odors, but from other chemical signals as well—into electrical signals (as opposed to physical signals). Specifically, odor molecules will bind to olfactory receptors in the NASAL mucosa, or the membrane that lines the nostrils. This is what stimulates the neurons to send signals to the brain.While smell seems pretty straightforward, our nose is actually designed for two different senses of smell (or olfaction). There’s the olfactory system, which is how we PERCEIVE odors both pleasant and aversive. However, we also have an accessory/secondary olfactory sense, which detects PHEROMONES and odorless chemicals that activate the body’s EMOTIONAL and limbic systems. |
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