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Den110- Structures
| Question | Answer |
|---|---|
| Main parts of oral cavity: | vestibule and oral cavity proper |
| Vestibule: | from teeth to lips |
| Oral cavity proper: | everything that does not include vestibule |
| Philtrum: | depression from midline of upper lip to base of nose |
| Tubercle: | elevation in middle of upper lip |
| Vermillion zone: | meat of the lips |
| Vermillion border: | outline of the lips |
| Labial commisure: | junction of upper and lower lips; corners of mouth |
| Nasiolabial sulcus: | groove that separates lips from cheek; smile lines |
| Labial mental groove: | groove between lower lip and chin |
| Dorsal surface: | top surface; visible |
| Vetral surface: | bottom surface, need to lift tongue to see |
| Median sulcus: | divides surface into right and left sides of the tongue |
| Sulcus terminalis: | v shaped groove that runs posterior to circumvallate papillae |
| Foramen caecum: | depression at apex of sulcus terminalis |
| Filiform papillae: | flame shaped, anterior 2/3 of tongue, no taste buds |
| Fungiform papillae: | larger, anterior 2/3 of tongue, taste buds |
| Foliate papillae: | on sides of posterior part of tongue, taste buds |
| Circumvallate papillae: | posterior dorsal surface of tongue, 8-10, taste buds |
| Lingual frenum: | mucosa that attaches the tongue to the floor of the mouth, midline |
| Plica fimbriata: | fringed fold that runs on ventral surface of the tongue |
| Sublingual caruncle: | elevation on either side of frenum, opening for Wharton's duct |
| Sublingual fold: | tissue elevations which extend laterally from sublingual caruncles |
| Mandibular tori: | bone beneath thin tissue layer, lingual side of mandible |
| Palatine raphe: | midline dividing the palate into two sides |
| Palatine rugae: | soft tissue ridges, ant. 3rd of hard palate |
| Incisive papilla: | soft tissue that covers boney opening, ant. midline of the palate |
| Palate torus: | bone beneath thin layer of tissue, midline, various shapes |
| Vibrating line: | line between hard and soft palate |
| Soft palate: | posterior portion of palate which contains muscles and glands, redder in color |
| Fovea palatinae: | depressions at junction of hard and soft palate |
| Stensen's duct: | ductal opening for parotid gland |
| Fordyce's spots: | small and yellowish elevations located in the cheek and inner lip |
| Buccal mucosa: | soft tissue which lines inside portion of cheek |
| Linea alba: | raised white line that runs posteriorly, where max. and mand. teeth meet |
| Gingival margin: | occlusal or incisive portion of the gingiva |
| Free gingiva: | surrounds each tooth, extends from gingival margin to attached gingiva |
| Free gingival groove: | line where free gingiva and attached gingiva meet |
| Attached gingiva: | ging. tissue which is bound to bone, connected to cementum and bone |
| Mucogingival junction: | scalloped line between attached gingiva and alveolar mucosa |
| Alveolar mucosa: | moveable tissue, which is loosely attached to underlying bone |
| Sulcus: | shallow space between free gingiva and tooth |
| Epithelial attachment: | attachment of the gingiva to the tooth, bottom of the sulcus |
| Sharpey's fibers: | part of the periodontal ligament, attached to cementum and bone |
| Mucous membranes: | lining of a body cavity that opens to outside of body; surface of oral cavity |
| Three types of oral mucosa: | 1. masticatory 2. lining 3. specialized |
| Masticatory mucosa: | bound to bone, does not stretch, able to withstand forces examples: gingiva, hard palate |
| Lining mucosa: | covers muscles examples: lip, cheek, vestibule, floor of mouth, soft palate |
| Specialized mucosa: | tissue has sensory function |
| Labial frenum: | fold of tissue, attaches center of lip to alveolar mucosa, max and mand midlines |
| Buccal frenum: | folds of tissue that attache cheeks to alveolar mucosa, canine premolar region |
| Exostoses: | bony ridges on facial surface of the maxilla or mandible |
| Lingual tonsil: | located on dorsum of tongue, posterior location |
| Palatine tonsils: | mass of lymphatic tissue, located on lateral walls of oral pharynx, between arches |
| Glossopalatine arch: | "anterior wall", muscle that runs from base of tongue to soft palate |
| Pharungopalatine arch: | "posterior wall", runs from pharyngeal wall to soft palate |
| Retromolar pad: | mass of soft tissue in area distal to mandibular third molars |
| Maxillary tuberosity: | bone and soft tissue at post. end of maxillary alveolar ridge |
| Alveolar process: | part of bone of maxilla and mandible that surrounds and supports teeth |
| What is saliva made up of? | electrolytes, proteins, glucose, mucin, salts, cells/debris |
| Functions of saliva: | mastication, solvent, lubrication, buffer, cleanses mouth, inhibits MO growth |
| 3 kinds of salivary gland secretion: | serous, mucous, mixed |
| Serous secretion: | cells secrete mostly protein and small amount of carbs, watery, function is carb breakdown and amylase precursor |
| Mucous secretion: | high in carbs, low in protein, contains mucin, viscous secretion, function is lubrication |
| Mixed secretion: | gland exhibits both types of cells, secretes both serous and mucous secretions |
| 2 types of salivary glands: | major and minor |
| Major glands: | bilateral paired glands, empty into oral cavity by means of excretory duct. major glands are parotid, submandibular, and sublingual |
| Parotid gland: | largest major gland, produces 25% of secretions, below ear |
| Submandibular gland: | 60% of secretions, beneath post. part of tongue |
| Sublingual gland: | produces 5% of secretions, ant. to submandibular gland |
| Minor salivary glands: | widely dispersed throughout oral cavity, beneath oral mucosa of lips and cheek |
Created by:
madelineyork
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