โ When we taste something sour, our taste buds perceive the presence of acidic compounds such as citric acid or tartaric acid. These acids stimulate specific taste receptors on our taste buds, triggering a unique sensory experience
๐When our taste buds detect the sourness, signals are sent to our brain, which then communicates with various facial muscles.This muscles encircles the mouth. When we perceive sourness, this muscle contracts, causing our lips to pucker or purse.
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