GWEN SHOCKEY / SCIENCE PHOTO LIBRARY GWEN SHOCKEY / SCIENCE PHOTO LIBRARY
Illustrating the details of papillae on the tongue. These structures are involved in detecting the five (known) elements of taste perception: salty, sour, bitter, sweet, and umami. Depicted are filiform papilla (hair-like areas on top), circumvallate papilla (rounded smooth areas on top), fungiform papilla (jagged areas around sides), and taste buds (blue dots).
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