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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.
Â© 2014 WebMD, LLC. All rights reserved. The tongue is a muscular organ in the mouth. The tongue is covered with moist, pink tissue called mucosa. Tiny bumps called papillae give the tongue its rough texture.Thousands of taste buds cover the surfaces of the papillae.Taste buds are collections of nerve-like cells that connect to nerves running into the brain.iny bumps called papillae give the tongue its rough texture. Thousands of taste buds cover the surfaces of the papillae. Taste buds are collections of nerve-like cells that connect to nerves running into the brain.