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Section of Circumvallate Papillae
This is a section through two circumvallate papillae (A). At first glance they resemble fungiform papillae. However, unlike fungiform papillae they appear to be "countersunk" - sunken into the mucosa of the tongue - and surrounded by a moat-like space (arrows). Below the papillae are glands of Von Ebner (B) whose secretory products are conveyed by ducts (C) to the bottom of the moat-like recess surrounding each papilla.
Legend
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A - circumvallate papilla |
C - duct of glands of von Ebner |
