| lingual-facial-buccal dyskinesia | A syndrome of potentially irreversible, involuntary, dyskinetic movements that may develop in patients who have been treated with antipsychotic medications (for example phenothiazines) longer-term. Other drugs known to cause tardive dyskinesia include: tricyclic antidepressants, selegiline, clozapine, levamisole and metoclopramide. (27 Sep 1997) |
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| lingual flange | The portion of the flange of a mandibular denture that occupies the space adjacent to the tongue. (05 Mar 2000) |
| lingual flap | A flap derived from the tongue; used to close a defect in an adjacent part, such as the lip or palate. Synonym: lingual flap. (05 Mar 2000) |
| lingual follicles | Collections of lymphoid tissue in the mucosa of the pharyngeal part of the tongue posterior to the terminal sulcus collectively forming the lingual tonsil. Synonym: lenticular papillae, lingual follicles. (05 Mar 2000) |
| lingual frenulum | A fold of mucous membrane extending from the floor of the mouth to the midline of the undersurface of the tongue. Synonym: frenulum linguae, frenulum of tongue, vinculum linguae. (05 Mar 2000) |
| lingual gingiva | That portion of the gingiva that covers the lingual surfaces of the teeth and the alveolar process. (05 Mar 2000) |
| lingual goiter | A tumour of thyroid tissue involving the embryonic rudiment at the base of the tongue. (05 Mar 2000) |
| lingual gyrus | A relatively short horizontal convolution on the inferomedial aspect of the occipital and temporal lobes, demarcated from the lateral occipitotemporal or fusiform gyrus by the deep collateral sulcus, from the cuneus by the calcarine sulcus; its anterior extreme abuts the isthmus of the parahippocampal gyrus; the medial or upper strip of the gyrus forming the lower bank of the calcarine sulcus corresponds to the inferior half of the striate area or primary visual cortex and represents the contralateral upper quadrant of the binocular field of vision. Synonym: gyrus lingualis, gyrus occipitotemporalis medialis, medial occipitotemporal gyrus. (05 Mar 2000) |
| lingual hemiatrophy | Atrophy of one lateral half of the tongue. Synonym: lingual trophoneurosis. (05 Mar 2000) |
| lingual lobe | A U-or W-shaped ridge at the base of the lingual surface of the crown of the upper incisors and cuspid teeth, the lateral limbs running for a short distance along the linguoproximal line angles, the central portion just above the gingiva. Synonym: cingulum dentis, basal ridge, lingual lobe. (05 Mar 2000) |
| lingual lymph nodes | Lymph node along the lingual vein receiving drainage from the tongue (except tip); drain to submandibular lymph nodes. Synonym: nodi lymphatici linguales. (05 Mar 2000) |
| lingual mucosa | Mucous membrane of the tongue, the mucosa of the dorsum of the tongue appears velvety due to the presence of vast numbers of papillae; that of the inferior surface is smooth and thinner. Synonym: tunica mucosa linguae. (05 Mar 2000) |
| lingual nerve | <anatomy, nerve> A sensory branch of the mandibular nerve, which is part of the trigeminal (5th cranial) nerve. The lingual nerve carries general afferent fibres from the anterior two-thirds of the tongue, the floor of the mouth, and the mandibular gingivae. (12 Dec 1998) |
| lingual occlusion | Interdigitation of the teeth as seen from the internal or lingual aspect. See: linguoclusion. (05 Mar 2000) |
| lingual papilla | One of numerous variously shaped projections of the mucous membrane of the dorsum of the tongue. Synonym: papilla lingualis. The lingual portion of the gingiva filling the interproximal space between adjacent teeth; in molar and premolar areas, there may be separate lingual and buccal interdental papillae. See: interdental papilla. (05 Mar 2000) |