False-colour SEM of the surface of a human tongue

False-colour SEM of the surface of a human tongue

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Credit: OMIKRON/SCIENCE PHOTO LIBRARY

Caption: False-colour scanning electron micrograph of the surface of a human tongue showing filiform papillae interspersed with circumvallate papillae (round). Filiform papillae form a rough surface, which aids in feeding. They vary in length from 2- 3mm & contain nerve endings for tactile sensations. Each papilla is covered with layers of flattened squamous epithelial cells. The outer layers are constantly shed. The circumvallate papillae are few in number, consisting of a wall surrounding the central papillae & an intervening moat. Some taste buds are located in the central epithelium while most lie around the edge opening into the moat. Magnification: x60 at 35mm size.

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Keywords: anatomy, circumvallate, circumvallate papilla, false-coloured, filiform, filiform papilla, human body, papillae, taste bud, tongue

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