Upper Surface of Tongue Small 229×320 Medium 458×640 Large 733×1024 Download TIFF Original 1717×2400 | (2.8 MB) Description The upper surface of the tongue. Labels: 1, 2, circumvallate papillae; 3, fungiform papillae; 4, filiform papillae; 6, mucous glands. Keywords "circumvallate papillae", "filiform papillae", "fungiform papillae", "mucous glands", "papillae of tongue", "surface of the tongue", Taste, tongue Galleries Human Sensory Systems: Taste Source: Kimber, Diana C. Anatomy and Physiology for Nurses (New York, NY: The Macmillan Company, 1907)