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Intraoral Structures
Orofacial Anatomy - definitions for intraoral structures
| Question | Answer |
|---|---|
| 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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