Sensory System


How does the brain detect different smells?

The exact mechanism of olfaction is unclear, but some studies have been completed that attempt to classify smells into groups such as floral, mushy, pungent, etc., which are related to molecules of a particular shape and size. One hypothesis suggests that the shapes of gaseous molecules fit complementary shapes of membrane receptor sites on those olfactory receptor cells.

The parts of the nose. Anatomical Chart Co.

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