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Dent anatomy mod2
structures of the oral cavity
| Question | Answer |
|---|---|
| the area of the face bounded by the lips (anterior), the cheeks (lateral), the palate (superior) and the floor of the mouth (inferior). | Oral Cavity: |
| a well defined area bounded by the teeth (anterior and lateral) and the palatine tonsil (posterior). | Oral Cavity Proper |
| There are 3 interrelated systems of the oral cavity which include: | 1. Intraoral Functions 2. Soft Palate Functions 3. Teeth Function |
| 4 intraoral functions | 1.Phonetics (speech) 2. Mastication (chewing) 3. Respiration (breathing) 4. Digestion (breakdown/utilization of food) |
| 2 soft palate functions | 1.Swallowing (prevents regurgitation of food into the nasal passage) 2. Blowing (sound production |
| 4 functions of teeth | Aesthetics (pleasing look to face) Phonetics (speech) Mastication (chewing/grinding) Protection of supporting tissue (form and shape of face) |
| 2 fleshy borders of the mouth, upper and lower. Tend to be redder in younger people. May be pigmented. | Lips |
| line of demarcation separating lip mucosa from face. | vermilion border |
| small rounded nodule of tissue centered in the lowest part of the upper lip. | Tubercle |
| depression running from the tubercle to the nose | Philtrum |
| groove or fold that runs diagonally from each side of nose to corner of lip. | Nasolabial groove |
| horizontal groove below the lower lip which emphasizes the chin. | Labiomental Groove |
| corner of mouth where upper lip meets lower lip. | Commissure |
| Wet Line | junction or division between inner mucosa (more smooth & moist) and outer lip tissue (more rough and dry). |
| grayish red to coral pink color. Tissue is attached to maxillae and palatine bone. | Hard Palate |
| line that separates hard palate from soft palate, opposite 3rd molars. | Vibrating line |
| elevated mound of tissue, posterior to and centered between the max. centrals. Covers the incisive foramen. | Incisive Papillae |
| ruffled attached tissue covering the palate, posterior to max. anterior teeth. | Palatine Ruggae |
| union of the right and left maxillae. It is a line or depression of tissue running antero-posteriorly in the hard palate | Palatine Raphae |
| bulging area of tissue/bone posterior to max. 3rd molars | Maxillary Tuberosity |
| structure (fold of tissue) that hangs from the center of the posterior border of the soft palate. | Uvula |
| pair of pits located bilaterally to the median but posterior to the vibrating line. They are duct openings from minor palatine mucous glands. | Fovea Palatini |
| Redder in color than the hard palate due to increased vascularity. This tissue is not attached to bone. | Soft Palate |
| term refers to the space between the lips or cheeks and the teeth. | Vestibule |
| refers to the posterior portion (premolar/molar region) of the vestibule. | Buccal vestibule |
| refers to the anterior portion (incisor/canine region) of the vestibule. | Labial Vestibule |
| thin tough fold of tissue that attaches the lips and cheeks to the maxilla and mandible in the vestibular area. | Frenum |
| located between the upper and lower centrals. The upper frenum is usually more pronounced than the lower and is so firm that it can cause erupting centrals to be pushed aside causing a diastema (space). | Labial Frenum |
| multiple upper and lower frena attach cheeks to alveolar mucosa, located posterior to the canines. | Buccal Frenum |
| rounded, elevation of tissue adjacent to 1st/2nd/ molars, occurs bilaterally. | Parotid Papilla |
| The parotid papilla tissue covers the openings to ? | Stenson’s duct. |
| Term/s for ectopic sebaceous (sweat) glands. Generally seen on the buccal and labial mucosa. Appear as small, yellowish spots occurring in irregular and random patterns. | Fordyce Spots or Granules |
| An area located posterior to the soft palate that leads to the esophagus. the most posterior part of the oral cavity proper | Oropharynx |
| area of tissue located bilaterally posterior to the last tooth on the mandible | Retromolar pad/retromandibular pad |
| Curtain or fold of tissue connecting the mandible to the maxilla. Found bilaterally when mouth is opened wide. Fold extends from retromandibular pad to maxillary tuberosity. | Ptergomandibular Fold/Raphe |
| A space or opening between the right and left palatine tonsils and the anterior and posterior pillars. (behind the uvula | Oropharynx Fauces |
| Refers to the ENTIRE curtain or fold of tissue that separates the mouth from the pharynx and esophagus. a zone of mucous tissue that is located btwn the anterior pillars and the pterygomandibular fold. uvula hangs from the middle of this curtain. | Retromylohyoid Curtain |
| Broad, flat organ made of muscle fibers and glands. Strongest muscle in the body that rests on the floor of the mouth.Principle organ of taste. Aids in speech, mastication and deglutition (swallowing). | Tongue |
| top surface of the tongue Gray-red in color rough surface | Dorsum of the tongue |
| How many types of papillae are on the dorsum of the tongue ? | 4 types |
| type of papillae that covers the ant. 2/3’s of tongue; abundant, fine & hair-like; rarely have taste buds. | Filiform papillae |
| type of papillae that is deeper red in color, larger, more sparse, scattered, shorter, round mushroom shape; senses sweet, salty & sour taste. | Fungiform papillae |
| type of papillae that is large, red leaf-like projections; located on the lateral surface of the tongue; sense sour taste. | Foliate papillae |
| 8-12 large papillae, flat mushroom shape; form V-shape row at posterior of tongue; sense bitter taste. | Circumvallate papillae |
| 4 types of papillae on the tongue | Filiform, Fungiform, Circumvallate, and Foliate |
| small circular opening posterior to the V-shape of the circumvallate papillae. Remains of the thyroglossal duct from which the thyroid gland was formed. | Foramen Cecum |
| Underside of the tongue Reddish to bluish-purple in color Very vascular | Ventral surface of the tongue |
| Tough band of tissue that anchors tongue to floor of mouth. Theres ONLY one of these | Lingual Frenum |
| refers to a more anterior attachment of the frenum to the tip of the tongue thereby limiting the range of independent movement. | Tongue Tied |
| fold that occurs at the junction of the broad ventral sides of the tongue and its attachment to the floor. Duct openings from ______glands occur along fold. | Sublingual folds AKA plica sublingualis, Sublingual glands |
| Bilateral elevations of tissue located on either side of the anterior medial point or base of lingual frenum. Duct openings from the ______ gland sits on top pf each of these elevations. | Sublingual Caruncles, submandibular |
| Two radiating, opposing diagonal ducts that deliver saliva from the submandibular glands to the duct openings or caruncles. | Two radiating, opposing diagonal ducts that deliver saliva from the submandibular glands to the duct openings or caruncles. |
| An average person will secrete over a______ of saliva in 24 hours | pint (<2 cups) |
| are the largest salivary glands producing 2/3’s of the daily saliva, mostly in the form of serous or watery type. | Submandibular glands |
| produce less than 10% of daily saliva in the form of a thick, ropy type of mucous | Sublingual glands |
| secretes through the Stenson’s duct the remaining daily supply of saliva. | The parotid |
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