The correct sequence for the perception of smell in mammals is?
Question
The correct sequence for the perception of smell in mammals is?
Options
A)
chemicals --> olfactory nerve endings --> brain
B)
dissolved chemicals --> nasal sensory cells --> brain
C)
chemicals --> mucus membrane sensory cells --> brain
D)
dissolved chemicals --> sensory cells --> olfactory nerve --> brain
The correct answer is D.
Explanation:
In mammals(humans), the process of olfaction begins when volatile molecules enter the nasal cavity and activate receptors in the olfactory epithelium (OE). The olfactory receptor (OR) proteins are located in hair-like projections of the olfactory sensory neurons (OSNs).
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