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Lingual papillae (singular papilla) are the small, nipple or hairâlike structures on the upper surface of the tongue that give the tongue its characteristic rough texture.hey are found on the upper surface of the tongue, scattered amongst the filiform papillae but are mostly present on the tip and sides of the tongue. They have taste buds on their upper surface which can distinguish the five tastes: sweet, sour, bitter, salty, and umami. They have a core of connective tissue.
This can result in enlargement of the papillae on the tongue. Canker sores can be present in the mouth with no known cause. And when the person is experiencing stress, this condition may be more severe. There are some medical conditions that have symptoms that include the enlargement of the papillae.