SUSUMU NISHINAGA / SCIENCE PHOTO LIBRARY SUSUMU NISHINAGA / SCIENCE PHOTO LIBRARY
Tongue surface, coloured scanning electron micrograph (SEM). Covering the majority of the tongue's surface are backward facing scale-like projections called filiform papillae, which sense pressure. The round areas are vallate papillae. These are the largest of the papillae and contain taste buds.
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