DENNIS KUNKEL MICROSCOPY / SCIENCE PHOTO LIBRARY DENNIS KUNKEL MICROSCOPY / SCIENCE PHOTO LIBRARY
Coloured scanning electron micrograph (SEM) Mammal tongue filiform papillae and taste bud (mouse, Mus sp.). Filiform papillae project toward the back of the tongue. The mammal tongue is a muscular organ in the mouth used for tasting, licking, swallowing, and articulating speech (in humans). It tongue is covered with moist, pink tissue called mucosa. Tiny bumps called papillae give the tongue its rough texture. Thousands of taste buds cover the surfaces of the papillae. Taste buds are collections of nerve-like cells that connect to nerves running into the brain. The tongue has many nerves that help detect and transmit taste signals to the brain. The four common tastes are sweet, sour, bitter, and salty. Magnification: x53 when shortest axis printed at 25 millimetres.
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