(23 of 30) Circumvallate Papillae This is a dorsal view of a sagittally sectioned tongue from a cadaver. Near the center of the field are two relatively large circular areas (B). These are circumvallate (vallate) papillae. A V-shaped line of circumvallate papillae indicate the approximate site of the boundary between the anterior 2/3's of the tongue (A) and the posterior 1/3 (P). The surface of the posterior 1/3 is much smoother than the anterior 2/3s. The posterior 1/3 is the site of the lingual tonsils. The anterior 2/3s is covered with various lingual papillae - fungiform (C) and filiform (D).	Legend A - anterior 2/3s of the tongue B - circumvallate papillae C - fungiform papillae D - filiform papillae P - posterior 1/3 of the tongue
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