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Question

Which of the following is true about the olfactory system?


A

The olfactory epithelium is present inside our eyes

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B

The olfactory bulbs are a pair of swellings that are located inside the mouth

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C

The olfactory bulb is a relay centre for the information regarding a taste

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D

The olfactory epithelium has a mucous layer so, only water-soluble odour molecules will pass through.

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Solution

The correct option is D

The olfactory epithelium has a mucous layer so, only water-soluble odour molecules will pass through.


The olfactory epithelium is involved in the first step of the sense of smell. It has a mucous layer covering the chemoreceptors. This mucous layer makes sure that only water-soluble odour molecules are able to pass through it easily and activate the chemoreceptors that are involved in the sensation of smell.


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