Where would you find the papillae?

Lingual Papillae (singular papilla) are the small, nipple-like structures on the upper surface of the tongue that give it its characteristic rough texture. The four types of papillae on the human tongue have different structures and are accordingly classified as circumvallate (or vallate), fungiform, filiform and foliate. All except the filiform papillae are associated with taste buds.

Lingual Papillae, particularly filiform papillae, are thought to increase the area of contact and friction between the tongue and food. This may increase the tongue's ability to manipulate a bolus of food, and also to position food between the teeth during mastication (chewing) and swallowing.