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Intraoral Structures

Orofacial Anatomy - definitions for intraoral structures

Oral cavity The inside of the mouth
Maxilla The upper jaw that consists of two maxillary bones
Mandible Single facial bone that articulates bilaterally with the temporal bone at the temporomandibular joints
Lingual Structures closest to the tongue
Palatal Structures closest to the palate
Facial Structures closest to the facial surface
Labial Structures closest to the lips
Buccal Structures closest to the inner cheek
Mucosa Mucus membrane such as that lining the oral cavity
Labial mucosa Lining of the inner portions of the lips
Buccal mucosa Mucosa that lines the inner cheek
Buccal fat pad Dense pad of tissue covered by the buccal mucosa
Parotid papilla Small elevation of tissue that marks the opening of the parotid salivary gland and is located opposite the second maxillary molar on the inner cheek
Maxillary tuberosity Elevation on the posterior aspect of the maxilla that is perforated by the posterior superior alveolar foramina
Vestibules Upper and lower spaces among the cheeks, lips, and gingival tissues in the oral region
Alveolar mucosa Mucosa that lines the vestibules of the oral region
Mucobuccal fold Fold in the vestibule where the labial or buccal mucosa meets the alveolar mucosa
Labial frenum Fold of tissue or frenulum located at the midline between the labial mucosa and alveolar mucosa of the maxilla and mandible
Gingiva Mucosa surrounding the maxillary and mandibular teeth
Attached gingiva Gingiva that tightly adheres to the bone over the roots of the teeth
Mucogingival junction Border between the alveolar mucosa and attached gingiva
Marginal ginginva Nonattached gingiva at the gingival margin of each tooth
Sulcus Shallow depression or groove such as that between a tooth and the inner surface of the marginal gingiva
Interdental gingiva Attached gingiva between the teeth
Palate Roof of the mouth
Hard palate Anterior portion of the palate formed by the palatine processes of the maxilla and the horizontal plates of the palatine bones
Median palatine raphe Midline fibrous band of the palate
Incisive papilla Bulge of tissue on the hard palate over the incisive foramen
Palatine rugae Irregular ridges of tissue surrounding the incisive papilla on the hard palate
Soft palate Posterior nonbony portion of the palate
Uvula Midline muscular structure that hangs from the posterior margin of the soft palate
Pterygomandibular fold Fold of tissue in the oral cavity that covers the pterygomandibular raphe
Retromolar pad Dense pad of tissue distal to the last tooth of the mandible that covers the retromolar triange
Tongue A prominent feature of the oral region
Base of the tongue The posterior third or root of the tongue
Body of the tongue Anterior two-thirds of the tongue
Apex of the tongue Tip of the tongue
Lingual papillae Small elevated structures covering the dorsal surface of the body of the tongue
Lateral surface of the tongue Side of the tongue
Foliate lingual papillae Ridges of the papillae on lateral tongue surface
Dorsal surface of the tongue Top surface of the tongue
Median lingual sulcus Midline depression on the dorsal surface of the tongue that corresponds to the deeper median septum
Filiform lingual papillae Papillae that give the tongue its velvety texture
Fungiform lingual papillae Papillae with a mushroom shaped appearance
Sulcus terminalis V-shaped groove in the dorsal surface of the tongue
Foramen cecum Depression on the dorsal surface of the tongue where the sulcus terminalis points backward toward the pharynx
Circumvallate lingual papillae Large lingual papillae anterior to the sulcus terminalis
Lingual tonsil Indistinct layer of lymphoid tissue located on the dorsal surface of the tongue's base
Lingual veins Veins that include the deep lingual, dorsal lingual, and sublingual veins
Plica fimbriata Fold with fingerlike projections on the ventral surface of the tongue
Lingual frenum Midline fold of tissue or frenulum between the ventral surface of the tongue and floor of the mouth
Sublingual fold Fold of tissue on the floor of the mouth where other smaller ducts of the sublingual salivary gland open into the oral cavity
Sublingual caruncle Papilla near the midline of the floor of the mouth where the sublingual and submandibular ducts open into the oral cavity
Pharynx Portion of both the respiratory and digestive tracts that is divided into the nasopharynx, oropharynx, and larygnopharynx
Larnygopharynx Inferior portion of the pharynx close to the laryngeal opening
Nasopharynx Portion of the pharynx that is superior to the level of the soft palate
Oropharynx Portion of the pharynx that is between the soft palate and opening of the larynx
Epiglottis A flap of cartilage that, during swallowing, folds back to cover the entrance to the larynx, preventing food and liquid from entering the trachea and then the lungs
Fauces Faucial isthmus or junction between the oral region and oropharynx
Anterior faucial pillar Vertical fold anterior to each palatine tonsil created by the palatoglossal muscle
Posterior faucial pillar Vertical fold posterior to each palatine tonsil created by the palatopharyngeous muscle
Palatine tonsils Tonsils located between the anterior and posterior faucial pillars
Created by: nayray



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