Maxillary molars have two buccal cusps and two lingual cusps. No preparation of the buccal or lingual/palatal surfaces is required. In the mandible, buccal or lingual cortical expansion and thinning are noted. Bulging of the buccal or lingual cortical plates may be present. The joining of buccal and lingual triangular ridges is usually named as an example. Filiform papillae are the most numerous of the lingual papillae. The tongue's upper surface (dorsum) is covered by taste buds housed in numerous lingual papillae. Side effects with prolonged use might occur, including hypertrophy of the lingual papillae. It lies superior to lingual and hypoglossal nerves. Nasal clicks involve a combination of lingual and pulmonic mechanisms. Excess salts are also excreted by nasal and lingual salt glands in some reptiles. It is also usually positioned just in front of the attachment of the lingual frenulum. This is usually due to lesions in the lingual gyrus. The gland receives its blood supply from the facial and lingual arteries. Data from the fMRI showed activation in several structures, notably the lingual gyrus.