Floor of Mouth and Palate Revision PDF

Floor of mouth and palate  Muscle Origin Insertion Nerve & blood supply Action Mylohyoid Inner surface of mandible Nerve supply: trigeminal nerve,...

Floor of mouth and palate  Muscle Origin Insertion Nerve & blood supply Action Mylohyoid Inner surface of mandible Nerve supply: trigeminal nerve, Body of hyoid bone - anterior surface mylohyoid branch Opening of mandible Blood supply: inferior alveolar, sublingual and submental arteries. Geniohyoid (Accessory muscle of Inferior genial tubercle Nerve supply: hypoglossal nerve Elevates hyoid bone mastication) (Mental spine on Body of hyoid bone Shortens FoM lingual surface of Blood supply: lingual artery - sublingual Widens pharynx mandible at midline) branch - swallowing Hypoglossus Depresses and retracts the Nerve supply: hypoglossal nerve Hyoid bone - superior Ventral parts of lateral tongue border of greater cornu tongue Blood supply: lingual artery Pulls lateral edge of tongue down to FoM  Area and features Clinical appearance Type of mucosa Epithelium Lamina propria Submucosa Floor of mouth Vascular Yes Lingual frenum Pink and red Non-keratinised stratified Thin - shows through Sublingual papillae&folds Blue and veins squamous vascular lamina propria Mandibular tori Compressible and elastic Ventral surface of tongue Wharton’s duct (SM) Bartholins (SL) Hard palate Pink, immobile and firm Keratinised stratified squamous Keratinised to protect from Dense - Incisive papilla No Firmer toward medial trauma attaches to Palatine rugae More cushioned towards bone Median palatine raphe lateral Palatal torus Soft palate Deeper pink or yellowish Non-keratinised stratified Loose Yes Thin and protective Uvula Compressible and elastic squamous Pillars of fauces Moist Tonsillar fossa Pterygomandibular fold  Uvula - - Palatoglossal arch (anterior) fold - Pterygomandibular -Palatopharyngeal arch (posterior) - Tonsillar fossa Plica fimbriata - Lingual frenum Lingual veins -- Sublingual folds --Sublingual papilla